Question

40 person Dig 30 pits in 60 days how many day will 20 persons take a dig 15 such fit

Answer 1

Given : 40 persons dig 30 pits in 60 days , So

1 person dig 30 pits in 60 × 40 = 2400 days

And

1 person dig 1 pit in   240030 = 80 days

Then ,

1 person dig 15 pits in  80  × 15 = 1200 days

Therefore,

20 persons dig 15 pits in 120020 = 60 days                                                     

Answer 2

4persons dig 30pits in 60 days
4 persons dig 1pits in 60/30=2 days
4 persons dig 15 pit in 2*15=30 days
1persons dig 15 pit in 30*4 days
20 persons dig 15pit in 30*4 /20 =6 days