Answer:
Total weight = 24 pounds
Number of helicopters = 3
Step-by-step explanation:
Small helicopters :
Weight = 3 pound
Weight of container = 15
Large helicopters:
Weight = 4
Weight of container = 12
3x + 15 = 4x + 12
3x - 4x = 12 - 15
-x = - 3
x = 3
Total weight of the container :
3(3) + 15
9 + 15 = 24 pounds
Hence, number of helicopters which will fit in either container is 3