David and Michael together can finish a job in 4 days 19 hrs 12 min. If David works at two-thirds Michael's speed, how long does it take Michael alone to finish the same job? a. `8\ d a y s` b. `15\ d a y s` c. `12 d a y s` d. none of these

A,B and C together can finish a job in 4 days .A and B together can finish the same job in 5 days .In how many days ,C alone will finish the same job ?

A and B can finish a work, working on alternate days, in 19 days, when A works on the first However, they can finish the work, working alternate days, in 19 5/6 days, when B works on first day. How many days does A alone take finish the work? a. 11 1/2 d a y s b. 15 d a y s c. 18 d a y s d. 21 d a y s

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 and B together can do a piece of work in 30 days. A having worked for 16 days, B finishes the remaining work alone in 44 days. In how many days shall B finish the whole work alone ? a. 30 d a y s b. 40 d a y s c. 60 d a y s d. 70 d a y s

X and Y together can finish a task in 12 days. If Y alone can finish the same task in 15 days, then how many days will X alone take to finish the task ?

A and B can do a piece of work in 30 days, while B and C can do the same work in 24 days and C and A in 20 days. They all work together for 10 days when B and C leave. How many days more will A take to finish the work ? 18 d a y s b. 24 d a y s c. 30 d a y s d. 36 d a y s

A and B together complete a piece of work in T days. If A alone completes the work in T + 3 days and B alone completes the piece of work in T + 12 days, what is T? 3 d a y s b. 9 d a y s c. 12 d a y s d. cannot be determined e. none of these

A and B working together can finish a job in x days. If A works alone and completes the job, he will take (x + 5) days. If B works alone and completes the same job, he will take (x + 45) days. What is x?

X can do a piece of work in 24 days. When he had worked for 4 days, Y joined him. If complete work was finished in 16 days, Y can alone finish that work in 18 d a y s b. 27 d a y s c. 42 d a y s d. 36 d a y s