问题描述：
GMAT OG上 DS题一道~
If $5000 invested for one year at p percent simple annual interest yield $500,what amount must be invested at k percent simple annual interest for one year to yield the same number of dollar
1)k=0.8p 2)k=8
If $5000 invested for one year at p percent simple annual interest yield $500,what amount must be invested at k percent simple annual interest for one year to yield the same number of dollar
1)k=0.8p 2)k=8
问题解答：
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