Answer:
238 nickels
282 pennies
Explanation:
N =Nickels
P= Pennies
20 nickels = 1 dollar
100 pennies = 1 dollar
N+P = 520
P=( 520-N)
0.05(N) +0.01(520-N) = $14.72
Multiply by 100 to avoid decimals:
5 N +1(520-N) = 1,472
5N +520 -N = 1,472
4N = 952
N = 238 (238/20 = 11.9) $11.9
520-238 = 282 pennies (=$ 2.82)
238 + 282 = 520
$11.9 + $2.82 = $ 14.72