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2021 JMPSC Sprint Problems/Problem 6

Revision as of 22:13, 10 July 2021 by Samrocksnature (talk | contribs) (Created page with "==Problem== Luis has <math>100</math> coins that are all either nickels or dimes. If the probability of randomly picking a nickel from these <math>100</math> coins is <math>\f...")
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Problem

Luis has $100$ coins that are all either nickels or dimes. If the probability of randomly picking a nickel from these $100$ coins is $\frac{2}{5},$ how much money does Luis have in dollars?

Solution

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