There are two less nickels than dimes, and as many quarters, as nickels and dimes together. The total amount of money is $5.25.
How many quarters, dimes, and nickels are there?
1 answer:
N=d-2
q=n+d =>q=(d-2)=q=2d-2
25q+5n+10d=525
replace q and n with d
25(2d-2) +5(d-2)+10d=525
50d-50+5d-10+10d=525
65d=585
d=9
n=7
q=16
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