AMC 10 Step by Step
2018 AMC 10AProblem 8P1-10~3 minPrint

Joe has a collection of 2323 coins, consisting of 55 -cent coins, 1010 -cent coins, and 2525 -cent coins. He has 33 more 1010 -cent coins than 55 -cent coins, and the total value of his collection is 320320 cents. How many more 2525 -cent coins does Joe have than 55 -cent coins?

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Problem © Mathematical Association of America (MAA), American Mathematics Competitions. Reproduced for non-commercial educational use. Solution and commentary are original to this site.