Time & Work; Pipes & Cisterns MCQs

A can do a piece of work in 10 days. B can do it in 15 days. How many days will they take together?

• 5

• 6

• 8

• 12

A and B can complete a work in 12 days and 18 days respectively. In how many days can they complete it together?

• 7.2

• 8.5

• 10

• 6.5

If A is twice as efficient as B and B can do the work in 18 days, how long will A and B together take?

• 6 days

• 8 days

• 9 days

• 12 days

A can complete a work in 12 days. B starts the work and after 4 days, A joins. If the total work is completed in 8 days, how many days would B alone take?

• 24

• 18

• 12

• 16

3 men can do a job in 6 days. How many men are needed to complete it in 2 days?

• 6

• 8

• 9

• 12

A and B together can finish a job in 8 days. B alone can do it in 12 days. How long will A alone take?

• 24

• 18

• 16

• 20

A can do a job in 5 days, B in 10 days. How much work is done in one day if both work together?

• 1/2

• 1/3

• 3/10

• 1/5

If 10 workers can finish a task in 15 days, how many workers are required to finish it in 6 days?

• 20

• 25

• 30

• 35

A can do a job in 20 days, B in 30 days, and C in 60 days. If they work together, how long will it take to finish the work?

• 10 days

• 8 days

• 6 days

• 12 days

If A and B together can do a piece of work in 4 days, and A alone can do it in 6 days, how many days will B take to do the work alone?

• 8

• 10

• 12

• 15