Question 1189915
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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 60 large boxes and 50 small boxes. 
If the truck is carrying a total of 4500 pounds in boxes, 
how much does each type of box weigh?
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            It can be solved using arithmetic only,  without  Algebra.



<pre>
Since the combined weight of one large box and one small box is 80 pounds,

50 large boxes and 50 small boxes  weight  50*80 = 4000 pounds, combined.


It means that remaining 60-50 = 10 large boxes weight 4500-4000 = 500  pounds.


Hence, one large box weights 500/10 = 50 pounds.


It means that each small box weights 80-50 = 30 pounds.
</pre>

Solved &nbsp;(mentally).