Question (9/75)
If 8 men can reap 80 hectares land in 24 days, then how many hectares can 36 men reap in 30 days ?(A) 350
(B) 400
(C) 450
(D) 500
Question (10/75)
If 3 pumps, working 8 hours a day can empty a tank in 2 days, How many hours a day must 4 pumps work to empty the tank in 1 day ?(A) 9 Hours
(B) 10 Hours
(C) 11 Hours
(D) 12 Hours