Question 387730
Let n=number of nickels and d=number of dimes.
.05n+.1d=2.10
.
.05(n+24)+.1*3d=6.30
.05n+1.2+.3d=630
.05n+.3d=5.10
.
.05n+.3d=5.10
.05n+.1d=2.10
----------------subtract
===>.2d=3.00
.
d=15
n=12
.
Ed