Sassy Eateries is a well-known brunch place in BiIlekahalli. Due to COVID-19 restrictions, they had to limit the number of tables in their restaurant to be 4 with a maximum of 4 people allowed on a table. Menu card for the restaurant had the following information

On a particular day, 6 groups visited between morning shift (9 am to 12 noon). The following things are known about the groups
1. Group I had 3 people. They reached the restaurant at 9:15 and ordered 3 different food items with an overall bill of Rs. 600
2. Group II consisting of 4 people reached the restaurant at 09:30 am and ordered 2 sodas, 1 noodle, and 1 Pizza
3. Group III consisting of 2 people reached the restaurant at 10:00 and ordered a burger and a Pizza
4. Group IV consisting of 3 people ordered a Burger, a Dosa, and a Soda. They reached the restaurant at 10:10 am
5. Group V consisting of 2 people ordered a noodle and a dosa. They reached the restaurant at 10:25 am
6. Group VI consisting of 2 people reached the restaurant at 10:30 am and they were served food at 11:15 am. They had to pay a bill of Rs. 200.
7. Number of food items ordered by a group is equal to the number of members in that group
The following things are known about the restaurant and the management
(I) There are 2 cooks who are employed by the management named A and B. A is the only chef who knows how to cook Pizza. The rest of the food items can be made by  both the chefs
(II) 4 tables are numbered Table 1,2,3 and 4. The lowest-numbered available table has to be occupied first
(III) A Chef starts working on new order only after the there are no pending food items on current order. The group which placed an order earlier is given higher priority
(IV) Chefs work in such a way that the time required to serve the order is minimum. 
(V) All the food items belonging to the same table are served together. It takes 25 minutes to finish eating after which the group leaves. After that, the waiter takes 10 minutes to sanitize the table and it is ready for occupying
(VI) There is the negligible time elapsed in entering the restaurant and placing the order.
(VII) If all tables are occupied then the group has to wait outside. As soon as any table is available they'll be allowed inside and can place order at that time
Q. If one more group reaches the restaurant immediately after Group VI has arrived, when is the earliest the new group can be seated in the restaurant? 
  • a)
    11:15
  • b)
    10:55
  • c)
    11:00
  • d)
    10:45
Correct answer is option 'C'. Can you explain this answer?

Related Test

Answers

Wizius Careers
Feb 11, 2022
Let us start with group I. Since it is given that there were 3 members, thus 3 food items were ordered totaling the bill of Rs 600. Thus we know pizza, a burger, and a dosa was ordered. SInce chef A can make pizza he will be making Pizza from 09:15 to 09:35(20 minutes). Burger and Pizza both take 15 minutes each. Chef B will start making any one of these from 09:15 to 09:30. And after this, e'll make the last food of the order from 09:30 to 09:45. Thus the food will be served at 09:45. Group will finish eating by 10:10. After sanitising the table will be again available at 10:20. The following can be represented as :


Thus group 2 coming at 09:30 ordered 2 sodas, 1 noodle, and a pizza. Since table 1 is occupied they will sit on table 2. Chef A will start working on their order at 09:35 whereas chef B will start working on the order from 09:45. To ensure the ordered is delivered in least time A will make 2 sodas and  pizza.The remaining food item(noodle) will be made by B from 09:45 to 10:05. Thus the order will be served at 10:05. Group will finish eating by 10:30. Table 2 will be available by 10:40. It can be represented as


Group 3 will come at 10:00 and occupy table 3. The chef will start working on their order at 10:05. A will make Pizza and B will make a burger. Both orders will be served at 10:25. They will finish eating in 25 minutes. After which 10 minutes is taken for sanitization. The table will be available at 11:00


Group 4 comes at 10:10. They order 1 burger,1 dosa, and 1 soda. To minimize time soda will be made by chef B. Burger and Dosa both take 15 minutes each and can be made by either of them. One will make dosa and the r will make a burger. Order will be finished and served at 10:40.


Now group 5 came at 10:25. This time table 1 was available and hence will be occupied by them. Both chefs will get free at 10:40 and start cooking for group 5. One chef has to cook noodles which will take 20 minutes and another one will cook dosa which takes 15 minutes. Let us assume that A cooks noodle and B cooks Dosa( this assumption will not affect the solution as only 1 group is left to serve after group 5 and no further orders of Pizza are made)


Group 6 came at 10:30. But table 2 got free at 10:40 at the earliest. Hence they entered the restaurant at 10:40. There we 2 people hence 2 items were ordered worth 200. A possible combination is (burger and soda) or (Dosa and soda) or ( Sandwich and Noodles).
The 2 combinations (burger and soda) or (Dosa and soda) has a  cooking time of 15 minutes+5minutes. In this case B will cook for 15 minutes and A will cook for 5 minutes to ensure that the order is made available at the least possible time. In this case, it will be possible at 11:10 am.
Combination of  sandwich and noodle has a  cooking time of 10 minute+20 minutes. B has to cook for 20 minutes and finish by 11:15 whereas A will cook for 10 minutes and finish by 11:10. Thus food will be served at 11:15
In question it was given that the food was served to them at 11:15 hence they ordered a sandwich and a noodle.


We can see that after 10:30 when group 6 occupied table 2, the next table to get free was table 3 at 11:00.

Let us start with group I. Since it is given that there were 3 members, thus 3 food items were ordered totaling the bill of Rs 600. Thus we know pizza, a burger, and a dosa was ordered. SInce chef A can make pizza he will be making Pizza from 09:15 to 09:35(20 minutes). Burger and Pizza both take 15 minutes each. Chef B will start making any one of these from 09:15 to 09:30. And after this, ell make the last food of the order from 09:30 to 09:45. Thus the food will be served at 09:45. Group will finish eating by 10:10. After sanitising the table will be again available at 10:20. The following can be represented as :Thus group 2 coming at 09:30 ordered 2 sodas, 1 noodle, and a pizza. Since table 1 is occupied they will sit on table 2. Chef A will start working on their order at 09:35 whereas chef B will start working on the order from 09:45. To ensure the ordered is delivered in least time A will make 2 sodas and pizza.The remaining food item(noodle) will be made by B from 09:45 to 10:05. Thus the order will be served at 10:05. Group will finish eating by 10:30. Table 2 will be available by 10:40. It can be represented asGroup 3 will come at 10:00 and occupy table 3. The chef will start working on their order at 10:05. A will make Pizza and B will make a burger. Both orders will be served at 10:25. They will finish eating in 25 minutes. After which 10 minutes is taken for sanitization. The table will be available at 11:00Group 4 comes at 10:10. They order 1 burger,1 dosa, and 1 soda. To minimize time soda will be made by chef B. Burger and Dosa both take 15 minutes each and can be made by either of them. One will make dosa and the r will make a burger. Order will be finished and served at 10:40.Now group 5 came at 10:25. This time table 1 was available and hence will be occupied by them. Both chefs will get free at 10:40 and start cooking for group 5. One chef has to cook noodles which will take 20 minutes and another one will cook dosa which takes 15 minutes. Let us assume that A cooks noodle and B cooks Dosa( this assumption will not affect the solution as only 1 group is left to serve after group 5 and no further orders of Pizza are made)Group 6 came at 10:30. But table 2 got free at 10:40 at the earliest. Hence they entered the restaurant at 10:40. There we 2 people hence 2 items were ordered worth 200. A possible combination is (burger and soda) or (Dosa and soda) or ( Sandwich and Noodles).The 2 combinations (burger and soda) or (Dosa and soda) has a cooking time of 15 minutes+5minutes. In this case B will cook for 15 minutes and A will cook for 5 minutes to ensure that the order is made available at the least possible time. In this case, it will be possible at 11:10 am.Combination of sandwich and noodle has a cooking time of 10 minute+20 minutes. B has to cook for 20 minutes and finish by 11:15 whereas A will cook for 10 minutes and finish by 11:10. Thus food will be served at 11:15In question it was given that the food was served to them at 11:15 hence they ordered a sandwich and a noodle.We can see that after 10:30 when group 6 occupied table 2, the next table to get free was table 3 at 11:00.
Let us start with group I. Since it is given that there were 3 members, thus 3 food items were ordered totaling the bill of Rs 600. Thus we know pizza, a burger, and a dosa was ordered. SInce chef A can make pizza he will be making Pizza from 09:15 to 09:35(20 minutes). Burger and Pizza both take 15 minutes each. Chef B will start making any one of these from 09:15 to 09:30. And after this, ell make the last food of the order from 09:30 to 09:45. Thus the food will be served at 09:45. Group will finish eating by 10:10. After sanitising the table will be again available at 10:20. The following can be represented as :Thus group 2 coming at 09:30 ordered 2 sodas, 1 noodle, and a pizza. Since table 1 is occupied they will sit on table 2. Chef A will start working on their order at 09:35 whereas chef B will start working on the order from 09:45. To ensure the ordered is delivered in least time A will make 2 sodas and pizza.The remaining food item(noodle) will be made by B from 09:45 to 10:05. Thus the order will be served at 10:05. Group will finish eating by 10:30. Table 2 will be available by 10:40. It can be represented asGroup 3 will come at 10:00 and occupy table 3. The chef will start working on their order at 10:05. A will make Pizza and B will make a burger. Both orders will be served at 10:25. They will finish eating in 25 minutes. After which 10 minutes is taken for sanitization. The table will be available at 11:00Group 4 comes at 10:10. They order 1 burger,1 dosa, and 1 soda. To minimize time soda will be made by chef B. Burger and Dosa both take 15 minutes each and can be made by either of them. One will make dosa and the r will make a burger. Order will be finished and served at 10:40.Now group 5 came at 10:25. This time table 1 was available and hence will be occupied by them. Both chefs will get free at 10:40 and start cooking for group 5. One chef has to cook noodles which will take 20 minutes and another one will cook dosa which takes 15 minutes. Let us assume that A cooks noodle and B cooks Dosa( this assumption will not affect the solution as only 1 group is left to serve after group 5 and no further orders of Pizza are made)Group 6 came at 10:30. But table 2 got free at 10:40 at the earliest. Hence they entered the restaurant at 10:40. There we 2 people hence 2 items were ordered worth 200. A possible combination is (burger and soda) or (Dosa and soda) or ( Sandwich and Noodles).The 2 combinations (burger and soda) or (Dosa and soda) has a cooking time of 15 minutes+5minutes. In this case B will cook for 15 minutes and A will cook for 5 minutes to ensure that the order is made available at the least possible time. In this case, it will be possible at 11:10 am.Combination of sandwich and noodle has a cooking time of 10 minute+20 minutes. B has to cook for 20 minutes and finish by 11:15 whereas A will cook for 10 minutes and finish by 11:10. Thus food will be served at 11:15In question it was given that the food was served to them at 11:15 hence they ordered a sandwich and a noodle.We can see that after 10:30 when group 6 occupied table 2, the next table to get free was table 3 at 11:00.