If 10 men can survive for 24 days on 15 cans of rations, how many cans will be needed for 8 men to survive for 36 days?

10 men can survive for 24 days with 15 cans of ration

so, 1 man can survive for 1 day with 15 / (10*24) cans of ration

so, 8 men can survive for 36 days with (15*8*36) / 240 = 18 cans of raion