Time and Work

A and B, working together can finish a piece of work in 6 days, while A alone can do it in 9 days. How much time will B alone take to finish it?

• 18 days

• 8 days

• 51 days

• 26 days

A and B can finish a piece of work in 16 days and 12 days respectively. A started the work and worked at it for 2 days. He was then joined by B. Find the total time taken to finish the work.

• 18 days

• 8 days

• 9 days

• 5 days

A and B can do a piece of work in 18 days; B and C can do it in 24 days while C and A can finish it in 36 days. In how many days can A, B, C finish it, if they all work together?

• 10 days

• 11 days

• 6 days

• 16 days

Pipe A can fill an empty tank in 5 hours while pipe B can empty the full tank in 6 hours. If both are opened at the same time in the empty tank, how much time will they take to fill it up completely?

• 33 hours

• 20 hours

• 30 hours

• 10 hours

A can do a job in 16 days and B can do the same job in 12 days. With the help of C, they can finish the job in 6 days only. Then, C alone can finish it in

• 39 days

• 48 days

• 34 days

• 21 days

Pipe A can fill a cistern in 6 hours and pipe B can fill it in 8 hours. Both the pipes are opened and after two hours, pipe A is closed. How much time will B take to fill the remaining part of the tank?

• 9 hours

• 7 hours

A and B can do a piece of work in 12 days, B and C in 15 days, and C and A in 20 days. How much time will A alone take to finish the job?

• 50 days

• 30 days

• 35 days

• 62 days

Anil can do a piece of work in 5 days and Ankur in 4 days. How long will they take to do the same work, if they work together?

• 12/7 days

• 20/9 days

• 14/5 days

• 9/7 days

A cistern has two inlets A and B which can fill it in 12 hours and 15 hours respectively. An outlet can empty the full cistern in 10 hours. If all the three pipes are opened together in the empty cistern, how much time will they take to fill the cistern completely?

• 31 hours

• 20 hours

• 5 hours

• 10 hours

A can do a piece of work in 20 days and B in 15 days. They work together for 2 days and then A goes away. In how many days will B finish the remaining work?

• 11/2 days

• 22 days

• 23/2 days

• 47/5 days