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carter has 37 coins, all nickels and dimes in his piggy bank. The value of the coins is $3.17. How many dimes does carter have?
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4 votes
carter has 37 coins, all nickels and dimes in his piggy bank. The value of the coins is $3.17. How many dimes does carter have?

User Skalta
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1 Answer

4 votes
n = nickels, d = dimes
Make a system of equations
( n + d = 37 ) 0.05
0.05n + 0.10d = 3.17
0.05n + 0.05d = 1.85
Subtract (elimination method)
0.05d = 1.32, d = 26.4

He has 26 dimes
User Ben Souchet
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