1988 AMC 8 Problem 23
Attempt Problem 23 of the 1988 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 1988 AMC 8 solutions, or check the answer key.
All problems are used with official legal permission of the Mathematical Association of America (MAA).
23.
Maria buys computer disks at a price of for and sells them at a price of for How many computer disks must she sell in order to make a profit of
Answer: D
Small hint:
Work with a convenient batch of disks, since is a multiple of both and
Big hint:
A dozen disks costs and sells for a profit of per dozen
Solution:
Consider disks in dozens, since is a multiple of both and A dozen disks costs to buy and sells for for a profit of per dozen.
To make profit she needs dozen, which is disks.
Thus, the correct answer is D .
Problem 23 in other years
- 1985 AMC 8
- 1986 AMC 8
- 1987 AMC 8
- 1989 AMC 8
- 1990 AMC 8
- 1991 AMC 8
- 1992 AMC 8
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