Time and Work Aptitude Questions for Bank PO and SSC Exams

If 80 Persons can finish a work in 16 days by working 6 hours a day, the number of hours a day should 64 persons work to finish that same job in 15 days is:

The average wages of 500 workers were found to be 200. Later on, it was discovered that the wages of two workers were misread as 180 and 20 instead of 80 and 220. The correct average wages are: 

10 men can complete a piece of work in 15 days. They started work and after five days 10 women joined them and the work has finished in next 5 days. In how many days can 25 women finish the same piece of work?

If 12 men can do a piece of work in 24 days, then in how many days can 18 men do the same work?

A and B together can plough a field in 10 hours but by himself A requires 15 hours. How long would B take to plough the same field?

A alone can complete a work in 15 days and B alone can complete a work in 25 days. If they work on alternate days starting with A, in how many days the work will be finished?

A book can be read in 40 days if 7 pages are read every day. If the book needs to be read in 8 days. How many pages should be read every day?