1993 AHSME Problems/Problem 5
Problem
Last year a bicycle cost $160 and a cycling helmet $40. This year the cost of the bicycle increased by , and the cost of the helmet increased by . The percent increase in the combined cost of the bicycle and the helmet is:
Solution
Since the bicycle originally cost $160, the new cost will be 160 * 5% = 160 * 1/20 = 8, and 160 + 8 = 168. The new cost of the helmet will be 40 * 10% = 40 * 1/10 = 4, and 40 + 4 = 44. 160 + 40 = 200, and 168 + 44 = 212, so the total percent increase is 12/200 = 6%, or A.
See also
1993 AHSME (Problems • Answer Key • Resources) | ||
Preceded by Problem 4 |
Followed by Problem 6 | |
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