If 32 men can reap a field in 15 days, then in how many days can 20 men reap the same filed ?
21 days
22 days
24 days
20
Let the number of days be x 32:20=x:15
3220=x15 x=32×1520 x = 24 days
If 15 men can reap a field in 28 days; then 5 men can reap the same field in days.