10 men can lay a road 75 km long in 5 days.. In how many, days can 15 men lay a road 45 km long?

36 men can do a piece of work in 12 days. In how many days 9 men can do the same work?

24 men working at 8 hours per day can do a piece of work in 15 days. In how many days can 20 men working at 9 hours per day can complete the same work?

175 men can dig a canal 3150 m long in 36 days. How many men are required to dig a canal 3900 m long in 24 days?

48 men can dig a trench in 14 days then how many days will be taken by 28 men to dig the same clich?

12 painters can paint a wall of 180 m long in 3 days. How many painters are required to paint 200 m long wall in 5 days?

Formulate the following problem as a pair of equations and then find their solutions. 2 women and 5 men can together finish an embroidery work in 4 days while 3 women and 6 men can finish it in 3 days. Find the time taken by 1 women alone and 1 man alone to finish the work.

If 36 workers can build a wall in 12 days, how many days will 16 workers take to build the same wall ? (assuming the number of working hours per day is constant)

Formulate the following problems as a pair of equations and then find their solutions. 4 men and 6 women can finish a piece of work in 21 days while 10 men and 3 women can finish it in 14 days. Find the time taken by one man along and that by one woman along to finish the work.

A committee of 3 persons is to be constituted from a group of 2 men and 3 women. In how many ways can this be done? How many of these committees would consist of 1 man and 2 women?

A and B together can finish a piece of work in 12 days. If 'A' alone can finish the same work in 20 days, how many days B alone can finish it ?