My Math Forum Misleading but amusing "compound interest" problem

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 May 3rd, 2016, 07:39 AM #1 Senior Member   Joined: May 2008 Posts: 175 Thanks: 34 Misleading but amusing "compound interest" problem Beer soaked ramblings follow. The following problem had me stumped for a while till I realized, after 3 beer bottles and half an hour later, how simple it really was. At a certain rate of compound interest, money will double in x years, money will triple in y years, and money will increase tenfold in z years. At this same rate of compond interest, \$5 will increase to \$12 in n years. Find integers a, b, and c so that n = ax + by + cz.

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