A person can do the work in 10 days but another finishes the same work in 15 days, Together they can finish in how many days?
Answer: 6
Explanation
By using Flip rule:
So,
A’s 1 day work = 1/10
B’s 1 day work = 1/15
(A+B)’s 1 day work =
(1/10+1/15)= (3 + 2)/30 = 5/30= 1/6
So together they can complete work in 6 days
This question appeared in
Past Papers (3 times)
FIA Inspector Past Papers (1 times)
FIA Past Papers (1 times)
FPSC Past Papers (1 times)
This question appeared in
Subjects (1 times)
MATHS MCQS (1 times)
Related MCQs
- P and Q can complete a work in 15 days and 10 days respectively. They started the work together and then Q left after 2 days. P alone completed the remaining work. The work was finished in _______ days.
- A can do a piece of work in 10 days; B in 15 days. They work for 5 days. The rest of the work was finished by C in 2 days. If they get Rs. 1500 for the whole work, the daily wages of B and C are:
- A and B can do a piece of work in 12 days B and C in 15 days C and A in 20 days then that numbers of days taken by A B and C together to finish the work are?
- If a person A completes a work in 12 days and person B in 6 days and they start working together then In how many days they will complete the work?
- A and B can together finish a work in 30 days. They worked together for 20 days and then B left after 20 days. A finished the worked. In how many days A alone can finish the work?
- A is thrice as good as B in work. A is able to finish a job in 60 days less than B. They can finish the work in ______ days if they work together.
- A and B together can complete a work in 3 days. They start together but after 2 days, B left the work. If the work is completed after two more days, B alone could do the work in ____?
- X and Y can do a piece of work in 20 days and 12 days respectively. X started the work alone, and then after 4 days, Y joined him until the completion of the work. How long did the work last?
- A is twice as good as workman as B and together they finish a piece of work in 18 days. In how many days will B alone finish the work?
- A can finish a work in 40 days. 5 is 255% less efficient then A. The number of days A & B will take to finish the work working together in nearly ≠ 3?
