Ram can plough a field in 12 days and Harish can do the same work in in 16 days. How much field will they plough together in.

A can do (1)/(3) of a certain work in 12 days and B can do (1)/(6) of the same work in 4 days. Find, in how many days will they together complete the work ?

A\ a n d\ Q together can do a piece of work in 10 days, Q\ a n d\ R can do the same work together in 12 days, while A\ a n d\ R can do together in 15 days. How long each will take to do it separately?

A can do (1)/(4) of a work in 5 days and B can do (1)/(3) of the same work in 10 days. Find the number of days in which both working together will complete the work.

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 ?

36 men can do a piece of work in 7 days. How many men will do the same work in 42 days ?

Rakesh can do piece of work in 20 days. How much work can be do in 4 days?

A and B working together can mow a field in 56 days and with the help of C , they could have mowed it in 42 days. How long would C take to mow the field by himself ?

6 men and 8 boys can do a piece of work in 7 days, while 8 men and 12 boys do the same work in 5 days. How long would it take one boy to finish the same work?

A and B can do a work in 8 days, B and C in 12 days, and A and C in 16 days. In what time can they do it, all working together ?

55 cows can graze a field in 16 days. How many cows will graze the same field in 10 days?