1993 AJHSME Problems/Problem 21
Contents
[hide]Problem
If the length of a rectangle is increased by and its width is increased by , then the area is increased by
Solution
If a rectangle had dimensions and area , then its new dimensions would be and area . The area is increased by or .
Alternate Solution
Let the dimensions of the rectangle be . This rectangle has area . The new dimensions would be , so the area is , which is more than the original area.
See Also
1993 AJHSME (Problems • Answer Key • Resources) | ||
Preceded by Problem 20 |
Followed by Problem 22 | |
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