Question 518948
Let
Nickels = x
Dimes = 51-x
Total Amount = $3.80 = 3.80*100=380 cents

5x+10(51-x)=380
5x+510-10x=380
5x-10x=380-510
-5x=-130
-5x/-5=-130/-5
x=26



Nickels = x = 26
Dimes = 51-x = 51-26 = 25



Check
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5*26 + 10*25 = 380
130+250=380
380=380