Time and Work Questions

Painter A can paint a house in 40 days and Painter B can do it in 60 days. With help of C, they did the job in 20 days only. Then, C alone can do the job in

P and Q can do a project in 6 and 12 days respectively. In how many days can they complete 25% of the project if they work together?

A labourer can do a job in 50 hours. After 5 hours he takes a break. What fraction of the job is yet to be done?

S, T and U together can complete a work in 30 days. If the ratio of efficiency of S, T and U is 20 : 15 : 12 respectively, then in how many days U alone can complete the same work?

Prabhat has done 1/2 of a job in 12 days. Santosh completes the rest of the job in 6 days. In how many days can they together do the job?

P and Q can do a project in 150 and 100 days respectively. In how many days can they complete 60% of the project if they work together?

A can do a certain job in 12 days. B is 60% more efficient than A. Then B can do the same piece of work in

A can do a work in 15 days and B in 9 days. If they work on it together for 5 days, then what fraction of work is left?