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3 years ago

13

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:

katen-ka-za [31]3 years ago

3 0

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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