Question 1069336
0.05n+0.10d = 62.15
d = 5(n) substitute for d above:
0.05n+0.10(5n) = 62.15
0.05n+0.50n = 62.15
0.55n = 62.15
n = 62.15/0.55
n = 113 
so they had 113 nickels and d = 5(113) = 565 dimes
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Check:
113*0.05 = 5.65
565*0.10 = 56.5
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Total . . 62.15 Correct.
:
John