13 men working 7 hrs a day can make 280 bricks in 10 days, then in how many days 39 men can make 396 bricks working 3 hrs per day?
1
17
2
11
3
10
4
13
13 men working 7 hrs a day can make 280 bricks in 10 days, then in how many days 39 men can make 396 bricks working 3 hrs per day?