A and B can do a piece of work in 8 days and A alone can do it in 12 days. In how many days can B alone do it?

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A and B can do a piece of work in 8 days and A alone can do it in 12 days. In how many days can B alone do it?

A16

B12

C15

D24

Answer:

D. 24

Read Explanation:

total work = LCM( 8, 12) =24 efficency of A + B = 24/8 = 3 efficency of A = 24/12 = 2 efficency of B = 3 - 2 = 1 time taken by B to complete the work = 24/1= 24

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A takes twice as much time as B and thrice as much as C to complete a piece of work. They together complete the work in 1 day. In what time, will A alone complete the work.

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A and B can do a piece of work in 8 days and A alone can do it in 12 days. In how many days can B alone do it?

D. 24

Read Explanation:

A takes twice as much time as B and thrice as much as C to complete a piece of work. They together complete the work in 1 day. In what time, will A alone complete the work.

A work could be completed in 22 days. However due to three workers being absent, it was completed in 24 days. The original number of workers was.