1992 AMC 8 Problem 21
Attempt Problem 21 of the 1992 AMC 8 below, then check your answer against the professionally curated solution from LIVE by Po-Shen Loh. You can also try the full timed exam, view all 1992 AMC 8 solutions, or check the answer key.
All problems are used with official legal permission of the Mathematical Association of America (MAA).
21.
Northside’s Drum and Bugle Corps raised money for a trip. The drummers and bugle players kept separate sales records. In each pair on the graph, the open bar represents drums and the shaded bar represents bugles. According to the double bar graph of monthly sales below, in what month did one group’s sales exceed the other’s by the greatest percent?
Jan
Feb
Mar
Apr
May
Answer: B
Small hint:
For each month, read off the two bar heights and find the gap between them
Big hint:
Divide the difference by the smaller value to find the percent by which the larger exceeds it; compare this ratio across the months
Solution:
Reading the graph gives (drums, bugles): January February March April and May
The percent excess of the larger over the smaller is in January, in February, in March, in April, and in May. The greatest is February, where exceeds by about
Thus, the correct answer is B .
Problem 21 in other years
- 1985 AMC 8
- 1986 AMC 8
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