Answer:
64 Nickels
Explanation:
172 coins equal $14.00
It took time to figure this out, I just used a calculator to shimmy down the gap of possibilities, starting here;
100d = $10.00
72n = $3.60
I got closer here;
110d = $11.00
62n =$3.10
I subtracted 2 dimes and added 2 nickels from the previous to get the answer.
108d = $10.80
64n = $3.20
$10.80 + $3.20 = $14.00