Question 104548
N=4D
.05N+.10*D=6.00
.05*4D+.10D=6.00
.2D+.10D=6.00
.3D=6.00
D=6.00/.3
D=20 NUMBER OF DIMES
N=4*20 
N=80 NUMBER OF NICKELS.
PROOF
.05*80+.10*20=6.00
4.00+2.00=6.00
6.00=6.00