\nIf 1800 persons can finish the construction of a building in 40 days how many persons are need...

If 900 persons can finish the construction of a building in 40 days, how many persons are needed to complete the construction of building in 25 days.

10 men can finish the construction of a wall in 8 days.How many men are added to finish the work in half a day ?

6 men and 8 women can finish construction of a road in 10 days, 26 men and 48 women can finish this in 2 days. If 15 men and 20 women are appointed for completing this task, then how many days do they need?

If 3 persons can construct x chairs in 6 days, then 6 persons can construct x chairs in 4 days.

If 10 persons can make 20 articles in a day, then how many persons are required to make 10 articles in a day?

If 10 persons can dig 8 feet trench in 12 days, then how many days will 8 persons take to dig 6 feet trench?