a fruit company delivers its\ fruit\ in\ two\ types of boxes: large and small. A delivery of 9 large boxes and 7 small ones has a total of 171 kilograms. A delivery of 3 large and 5 small have a total of 75 kilograms. How much does each box weigh?
9 l + 7 s = 171
3 l + 5 s = 75 Multiply this equation by -3
-9 l - 15 s = -225 Add to top equation
- 8 s = -54 solve for s, the kg wt of small pkgs then use this value in one of the equations to compute l, the large pkg wt