1968 AHSME Problems/Problem 31
Contents
[hide]Problem
In this diagram, not drawn to scale, Figures and are equilateral triangular regions with respective areas of and square inches. Figure is a square region with area square inches. Let the length of segment be decreased by % of itself, while the lengths of and remain unchanged. The percent decrease in the area of the square is:
Solution
The side of the square after the length decrease is , which gives an area of square inches. to is a decrease of %. Therefore, answer is .
Solution
See also
1968 AHSC (Problems • Answer Key • Resources) | ||
Preceded by Problem 30 |
Followed by Problem 32 | |
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