Answer:
The answer is 63 trucks.
Step-by-step explanation:
If we need 45 trucks with 3.5 ton each to do the job; then we have a 157.5 ton payload. So if we divide the 157.5 ton into 2.5 ton trucks we get a total of 63 trucks.
3.5 x 45 = 157.5
2.5 x 63 = 157.5
