Question

A delivery truck is transporting boxes of two sizes: large and small. The combined weight of a large box and a small box is 80 pounds. The truck is transporting 70 large boxes and 60 small boxes. If the truck is carrying a total of 5300 pounds in boxes, how much does each type of box weigh?

Answer 1

Large box --> M
Small box --> m

M+m=80
70M+60m=5300

Now solve this system of equations. Very easy job now.