Dell Time and work Questions

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 till 

the completion of the work. How long did the work last?

P can complete a work in 12 days working 8 hours a day. 

Q can complete the same work in 8 days working 10 hours a day. 

If both P and Q work together, working 8 hours a day, 

in how many days can they complete the work?

A certain number of men complete a piece of work in 60 days. 

IF there were 8 men more the work would have been completed 

in 10 days less. How many men were there originally?

A group of men can complete a job in K hours. After every 4 hours, 

half the number of men working at that point of time leave the job. 

Continuing this way if the job is finished in 16 hours, 

what is the value of K ?

In the beginning, Ram works at a rate such that he can finish a 

piece of work in 24 hrs, but he only works at this rate for 16 hrs. 

After that, he works at a rate such that he can do the whole work 

in 18 hrs. If Ram is to finish this work at a stretch, 

howmany hours will he take to finish this work?

A can do a piece of work in 10 days, and B can do this work in 15 days. 

They both started together. After three days, B left the work. 

In how many more days will the work be finished?

A can do a piece of work in 12 days. B can do this work in 16 days. 

A started the work alone. After how many days should B join him, 

so that the work is finished in 9 days?

A and B can do a piece of work in 4 days, while C and D can 

do the same work in 12 days. In how many days will A, B, C and 

D do it together?

A, B, C, and D can do a piece of work in 20 days. If A and B can 

do it together in 50 days, and C alone in 60 days, 

find the time in which D alone can do it.

12 men can complete a work in 8 days. 16 women can complete the 

same work in 12 days. 8 men and 8 women started working and 

worked for 6 days. How many more men are to be added to 

complete the remaining work in 1 day?