You can
put this solution on YOUR website!Total number of coins
1.

Total value of the coins

2.

.
.
.
Subtract eq. 1 from eq. 2,

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.
.
Yes, as you found out, something is wrong with the problem.
You cannot reach $5.60 with 46 nickels and quarters.
$5.50 or $5.70 are the closest values for 46 coins.