P,Q and R can complete a job in 20 days, 30 and 40 days respectiely. They started working on it. Q and R left afte working for certain number of days and P alone completed the remaing work 7 days. Find the time taken to complete the job (in days)

P,Q and R can complete a job in 18 days,24 days and 36 days respectively. P started it and worked for 3 days. P then left Q then worked on it for 8 days. Q then left. R completed the remaining part of the job in 12 days. Find the time for which R worked (in days).

P,Q and R can complete a job in 18 days,24 days and 36 days respectively. P started it and worked for 3 days. P then left Q then worked on it for 8 days. Q then left. R completed the remaining part of the job in 12 days. Find the time for which R worked (in days).

A, B and C can complete a piece of work in 10 days, 20 days and 25 days, respectively. If they tak 40 days to complete a piece of work, then in how many days can C alone complete the work ?

The efficiency of A, B and C is the same. They started working on a certain job. After 5 days a leaves, after 5 moere days B leaves and C completes the remaining work in 5 more days. Find the time taken by eahc of them alone to complete the job. (in days)?

M and N can complete a job in 18 days and 20 days, respectively. They worked on it on alternative days starting with M. Find the time taken to comlete it (in day)

P,Q and R can complete a job in 6 days, 9 days and 12 days, respectively. They worked together and completed it. They earned a total of Rs. 2600. Find P's share ( in Rs.)