Two persons X and Y together can do a particular job in 36 days. If X's ability to do the work is twice that of Y, then find the number of days in which X and Y can do the work individually.

Three friends Priya, Usha and Spandana together can do a piece of work in 56 days. If Usha's ability to do the work is twice as that of Spandana and Priya's ability to do the work is twice as that of Usha, then find the number of days required for these friends to complete the same work if they work individually.

A and B together can do a piece of work in 6 days . If A can alone do the work in 18 days then the number of days required for B to finsh the work is

A and B together can do a piece of work in 20 days, while B and C together can do the same work in 15 days. If A ,B and C together can finish this work in 10 days, then find the number of days in which B alone can finish the work.

X and Y together can finish a job in 6 days. X can alone do the same job in 12 days. How long will Y alone take to do the same job ?

A can do a work in 36 days and B in 12 days. If they work on it together, then in how many days will they be able to do the work?