Working 5 hours a day, a work can be completed in 30 days. Let's find, how long it would take to complete the work, working 6 hours a day.

If 5 men working 6 hours a day can complete a work in 20 days , in how many day s will 15 men complete the work working 8 hours a day ?

20- men, decided to complete the repairing work, of a house in 30 days. But after 6 days 8 men feel sick. Let's find, how long they will take to complete the work.

12 men, working 8 hours a day, complete a piece of work in 10 days. To complete the same work in 8 days, working 15 hours a day, the number of men required is_____

Vinay and Praveen working together can paint the exterior of a house in 6 days. Vinay by himself can complete the job in 5 days less than Praveen. How long will it take Vinay to complete the job.

6 persons can complete a work in 7 days. Let's find how many persons will be required to finish the work in 21 days. In matheatical language, the problem may be stated as

A and B can complete (2)/(3) rd of a piece of work , if A work 3 days and B work 4 days together. While they can complete (11)/(12) part of the work.if A work 3 days and B works 6 days together. In how many days A and B will complete the work seperately.

About 150 workers were engaged to finish a piece of work in a certain number of days. Four workers stopped working on the second day, four more workers stopped their work on the third day and so on. It took 8 more days to finish the work. Then the number of days in which the work was completed is 29 days b. 24 days c. 25 days d. none of these