document.write( "Question 846562: Prove that a cashier with only dimes and quarters can make
\n" ); document.write( "change for any multiple of 5 cents that is 20 cents or greater. \r
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Algebra.Com's Answer #509833 by richard1234(7193)\"\" \"About 
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Base case: 20 cents is doable with 2 dimes.\r
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\n" ); document.write( "\n" ); document.write( "Assume 5k cents is doable where k >= 4. To make 5k+5 cents we can either replace two dimes with a quarter, or replace a quarter with three dimes. Since we must have either two dimes or a quarter (or both), one of the scenarios is possible, and hence we can make 5k+5 cents.
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