Question

Four men can dig 2 acres of land in 3 days working 4 hours a day. How many men are required to dig 5 acres of
land in 4 days working 3 hours a day at the same rate?

Answer 1

Land dig by 4 men in 1 day = 2/3
Land dig by 1 men in 1 day working 4 hours = 2/12
Land dig by 1 man 1 hour = 2/48
Land dig by 1 man in 3 hours = 2/16
Land dig by 1 man working 3 hours in 4 days = 2/4
2/4 acre land dig by number of people in 4 days working for 3 hours =1
1 acre land dig by number of people in 4 days working for 3 hours=4/2
5 acre land dig by number of people in 4 days working for 3 hours= 5*4/2
=10 people