Mr. A can do a particular work in 6 hours, and Mr. B can do the same work in 12 hours. How much time will it take if they do the work together?
Answer: 4 hours
Explanation
In 1 hour, A can do 1/6th of the work
In 1 hour, B can do 1/12th of the work
In 1 hour, Both A & B work
3/12 + 1/4
Answer: 4 hours
SH14-8-2023
This question appeared in
Past Papers (4 times)
FIA Assistant Director Past Papers (1 times)
FIA Past Papers (1 times)
FPSC 5 Years Past Papers Subject Wise (Solved With Details) (1 times)
FPSC Past Papers (1 times)
This question appeared in
Subjects (1 times)
MATHS MCQS (1 times)
Related MCQs
- Twelve men take 6 hours to finish a piece of work. After the 12 men have worked for 1 hour, the contractor decides to call in 8 more men. How many more hours would 20 men take to complete the remaining work?
- The work cannot be completed on time _________ you work for longer hours.
- 12 men work 8 hours a day to complete a piece of work in 10 days. to complete the same work in 8 days, working 15 hours a day, the number of men required is.
- 30 labourer's working 7 hours a day can finish a piece of work in 18 days, if the Labourer's work 6 hours a day, the number of Labourers required to finish the same piece of work in 30 days will be _________.
- 15 men take 21 days of 8 hours each to do a piece of work. How many days of 6 hours each would take 21 women if 3 women do as much work as 2 men, keeping the hours constant?
- Working 5 hours a day, A can Complete a work in 8 days and working 6 hours a day, B can complete the same work in 10 days. Working 8 hours a day, they can jointly completely the work in?
- If 36 men can do a piece off work in 25 hours, in how many hours will 15 do the same work?
- A can do a piece of work in 4 hours, B and C can do it in 3 hours. A and C can do it in 2 hours. How long will B alone take to do it?
- 10 men working 6 hours a day can complete a work in 18 days. How many hours a day must 15 men work to complete the same work in 12 days?
- If 12 men work 8 hours a day to complete a work in 10 days, how many men working 12 hours a day can complete the work in 5 days?
