Question

1. A piece of work can be done by 2 men and 5 boys in 5 days.

⅓rd of the work can be done by 3 men and 4 boys in 3 days.
How long will it be required by 9 men to do the same work?​

Answer 1

Answer:

5m *2= 3b * 5

m/b= 3/2

Work= time* efficiency

Total work = 5m * 2= 5(3)*2= 30

Time take to complete work for 10men , 3 boy=

30/(10*3 +3*2)= 30/30+6= 30/36 days