Quant Exam  >  Quant Questions  >  Mayank can do 50% more work than Shishu in th... Start Learning for Free
Mayank can do 50% more work than Shishu in the same time. Shishu alone can do a piece of work in 30 hours. Shishu starts working and he had already worked for 12 hours when Mayank joins him. How many hours should Shishu and Mayank work together to complete the remaining work?
  • a)
    6
  • b)
    12
  • c)
    4.8
  • d)
    7.2
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Mayank can do 50% more work than Shishu in the same time. Shishu alone...
Shishu alone does the work in 30 hours 

So in 1 hour he does 1/30 of the work 

Mayank in 1 hour does 1/30 + 1/2*1/30= 1/30 +1/60 = 3/60 = 1/20 of the work 

Together in 1 hour they do 1/30 +1/20 = 5/60 = 1/12 of the work 

Together they can finish the work in 12 hours 

Shishu in 12 hours does 12/ 30 = 2/5 

Remaining work = 3/5 

3/5 X 12 = 36/5 = 7.2 hours

View all questions of this test
Most Upvoted Answer
Mayank can do 50% more work than Shishu in the same time. Shishu alone...
Answer is 10.8 hrs , which is not there in options . how 7.2 can be the answer please explain ??
Free Test
Community Answer
Mayank can do 50% more work than Shishu in the same time. Shishu alone...
Given information:
- Mayank can do 50% more work than Shishu in the same time.
- Shishu alone can do a piece of work in 30 hours.
- Shishu started working and had already worked for 12 hours when Mayank joined him.
To find:
- How many hours should Shishu and Mayank work together to complete the remaining work?

Solution:
Let's first find out how much work Shishu can do in 1 hour.
Shishu can do a piece of work in 30 hours.
Therefore, in 1 hour, Shishu can do 1/30th of the work.

Let's now find out how much work Mayank can do in 1 hour.
Mayank can do 50% more work than Shishu in the same time.
This means Mayank can do (1 + 50/100) = 1.5 times the work that Shishu can do in the same time.
Therefore, in 1 hour, Mayank can do 1.5/30th = 1/20th of the work.

Let's say the total work is 'L'.
Shishu has already worked for 12 hours.
Therefore, the remaining work is (L - (1/30 x 12)) = (29/30)L.
Shishu and Mayank need to work together to complete this remaining work.

Let's say they work together for 'x' hours to complete the remaining work.
In 'x' hours, Shishu can do (1/30 x x) = x/30th of the remaining work.
In 'x' hours, Mayank can do (1/20 x x) = x/20th of the remaining work.
Together, in 'x' hours, they can do [(x/30) + (x/20)] = (5x/60) = (x/12)th of the remaining work.

We need to find out the value of 'x' for which (x/12)th of the remaining work is equal to (29/30)L - (L/2).
[(x/12)L] = [(29/30)L - (L/2)]
[(x/12)L] = [(7/15)L]
x = (7/15) x 12
x = 7.2

Therefore, Shishu and Mayank need to work together for 7.2 hours to complete the remaining work.

Answer: Option (D) 7.2
Explore Courses for Quant exam
Question Description
Mayank can do 50% more work than Shishu in the same time. Shishu alone can do a piece of work in 30 hours. Shishu starts working and he had already worked for 12 hours when Mayank joins him. How many hours should Shishu and Mayank work together to complete the remaining work?a)6b)12c)4.8d)7.2Correct answer is option 'D'. Can you explain this answer? for Quant 2026 is part of Quant preparation. The Question and answers have been prepared according to the Quant exam syllabus. Information about Mayank can do 50% more work than Shishu in the same time. Shishu alone can do a piece of work in 30 hours. Shishu starts working and he had already worked for 12 hours when Mayank joins him. How many hours should Shishu and Mayank work together to complete the remaining work?a)6b)12c)4.8d)7.2Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Quant 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Mayank can do 50% more work than Shishu in the same time. Shishu alone can do a piece of work in 30 hours. Shishu starts working and he had already worked for 12 hours when Mayank joins him. How many hours should Shishu and Mayank work together to complete the remaining work?a)6b)12c)4.8d)7.2Correct answer is option 'D'. Can you explain this answer?.
Solutions for Mayank can do 50% more work than Shishu in the same time. Shishu alone can do a piece of work in 30 hours. Shishu starts working and he had already worked for 12 hours when Mayank joins him. How many hours should Shishu and Mayank work together to complete the remaining work?a)6b)12c)4.8d)7.2Correct answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Quant. Download more important topics, notes, lectures and mock test series for Quant Exam by signing up for free.
Here you can find the meaning of Mayank can do 50% more work than Shishu in the same time. Shishu alone can do a piece of work in 30 hours. Shishu starts working and he had already worked for 12 hours when Mayank joins him. How many hours should Shishu and Mayank work together to complete the remaining work?a)6b)12c)4.8d)7.2Correct answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Mayank can do 50% more work than Shishu in the same time. Shishu alone can do a piece of work in 30 hours. Shishu starts working and he had already worked for 12 hours when Mayank joins him. How many hours should Shishu and Mayank work together to complete the remaining work?a)6b)12c)4.8d)7.2Correct answer is option 'D'. Can you explain this answer?, a detailed solution for Mayank can do 50% more work than Shishu in the same time. Shishu alone can do a piece of work in 30 hours. Shishu starts working and he had already worked for 12 hours when Mayank joins him. How many hours should Shishu and Mayank work together to complete the remaining work?a)6b)12c)4.8d)7.2Correct answer is option 'D'. Can you explain this answer? has been provided alongside types of Mayank can do 50% more work than Shishu in the same time. Shishu alone can do a piece of work in 30 hours. Shishu starts working and he had already worked for 12 hours when Mayank joins him. How many hours should Shishu and Mayank work together to complete the remaining work?a)6b)12c)4.8d)7.2Correct answer is option 'D'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Mayank can do 50% more work than Shishu in the same time. Shishu alone can do a piece of work in 30 hours. Shishu starts working and he had already worked for 12 hours when Mayank joins him. How many hours should Shishu and Mayank work together to complete the remaining work?a)6b)12c)4.8d)7.2Correct answer is option 'D'. Can you explain this answer? tests, examples and also practice Quant tests.
Explore Courses for Quant exam

Top Courses for Quant

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev