Question

If 32 men can read a file in 15 days . In how many days can 40 men real the same field

Answer 1

less men,more days

more men,less days

(indirect proportion)

let the days be x

Men ::Days

40 :: x

32:: 15

x=32*15/40=12 days.

Please pay attention, we have written 40 : 32 rather than 40 : 32, in indirect proportion.