Phil has 50 nickels and dimes worth $4.15. How many of each coin does he have?

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asked Jul 22, 2015 34.9k views

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Phil has 50 nickels and dimes worth $4.15. How many of each coin does he have?

Mathematics
middle-school

SI Web Design asked

by SI Web Design

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$x-number\ of\ nickels\\50-x-number\ of\ dimes\\\\0.05x+0.1(50-x)=4.15\\0.05x+5-0.1x=4.15\\0.05x-0.1x=4.15-5\\-0.05x=-0.85\ \ \ \ |:-0.05\\x=17\\\\50-17=33\\\\He\ have\ 17\ nickels\ and\ 33\ dimes.$

Pykam answered Jul 27, 2015

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