Important Questions Test: Ratio & Proportion- 3 - SSC CGL MCQ

The inhabitants of Hawaii Island are taxed in a peculiar manner. They have to pay a fixed sum irrespective of their income strata. In addition to this they have to pay an amount which is proportional to the excess of their salary over Rs 50,000. Mr Kalyan pays a total tax of Rs 6,200 when his annual salary is Rs 60,000 and his wife Mrs. Kalyan pays a total tax of Rs 7,700 when her annual salary is Rs 75,000. What is the yearly salary of Mr Ajay who pays an annual tax of Rs 8,200?

The total profit made by running a train between New Delhi to Lucknow consists of two parts: (i) a constant amount of Rs 24 lakh per trip and (ii) it varies as the square of the number of coaches attached to the engine that amounts to Rs 7P², where P is the number of coaches attached to the engine in the trip. If the average profit per coach per trip should not fall below Rs 169 lakh, then what is the minimum number of coaches that have to be attached to the engine?

The average weight of the fifty students in a class is 40 kg. If 5 students of average weight 42 kg and 15 students of average weight 45 kg are added into the same class, find the new average weight of the class.

The speed of man while walking, running and driving are in the ratio of 1:3:9. If he travels equal distance while walking, running and driving, what is the ratio

The time period of oscillation T for a pendulum is given

where l is the length of the pendulum and g is the acceleration due to gravity, ‘k’ is any const. If ‘k’ and ‘g’ remain unchanged under any condition, what should be the percentage change in l such that the time period T increases by 10%?

In the famous Hawthorne studies by Elton Mayo, employees of the organization were given the options of going to several places for entertainment. One-seventh of the employees preferred to go to the polo ground, a number equal to the square root of the remaining employees went to the museum. One-fifth of the remaining employees went to the fair. One-third of the remaining to the science exhibition and the rest to watch movie ASHOKA. which was running house full in the nearby theatre. The total number of employees who went to the polo ground and the museum is twice that of the employees who went to the fair.
Q.The entry tickets for museum, fair, exhibition and the movie were Rs 5, Rs 4, Rs 2 and Rs 25 respectively. How much money did the employees pay for all these on that Sunday?

Read the passage below and solve the questions based on it.
On 13th of November, I kept some money in a magical purse in which on even every alternate day starting from the 13th, money increases with respect to the closing amount on the evening of the previous day, that the ratio of money becomes 2 : 1 but on every alternate day starting from the 14th, the money decreases by Rs 10. when compared to the closing amount on the evening of the previous day I had Rs 500 on the 19th and the magical purse kept on multiplying money for me till the 25th of that November.
Q. How much money was there on the 22nd of November?

Price of each article of type P, Q, and R is Rs. 300, Rs. 180 and Rs. 120 respectively. Suresh buys articles of each type in the ratio 3:2:3 in Rs. 6480. How many articles of type Q did he purchase?

Read the passage below and solve the questions based on it.
In a class, every student plays exactly one of the following games—squash, table tennis, hockey, handball, cricket. Exactly 1/ 12^th of the girls and 1/8^th of the boys play- squash. 1/15^th of the girls and 1/6^th of the boys play hockey, 1/4^th of the girls and 1/12^th of the boys play handball. 1/5^th of the girls and 3/8^th of the boys plays table tennis and the remaining boys and girls play cricket. The total strength of the class is less than 120
Q. How many girls are there in the class?

Read the passage below and solve the questions based on it.
In a class, every student plays exactly one of the following games—squash, table tennis, hockey, handball, cricket. Exactly 1/ 12^th of the girls and 1/8^th of the boys play- squash. 1/15^th of the girls and 1/6^th of the boys play hockey, 1/4^th of the girls and 1/12^th of the boys play handball. 1/5^th of the girls and 3/8^th of the boys plays table tennis and the remaining boys and girls play cricket. The total strength of the class is less than 120
Q. Which of the following cannot be the ratio of boys and girls in the class?

The expenses of a hostel are partly fixed and partly variable with the number of boarders. When there are 50 boarders the charge is Rs. 48 per head and when there are 30 boarders the charge is Rs. 60 per head. Find the charges when there are 120 boarders?