Answer:
A
Step-by-step explanation:
Hope this helped!
A. 2x3=6 and 6x12=72 so 78 is greater than 36
6+72=79 which is less than 90
Let the weight of the first truck be represented by w.
total weight = w + (2 + w) + (2 + 2 + w) + (2 + 2 + 2 + w)
32 = 4w + 12
20 = 4w
w = 5
Therefore, the first truck weighs 5 tons, the second weighs 7 tons, the third weighs 9 tons and the fourth weighs 11 tons.