SOLUTION: josh has seven times as many nickels as quarters. if the coins total $2.40 how many of each does he have?

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Question 263870: josh has seven times as many nickels as quarters. if the coins total $2.40 how many of each does he have?
Found 2 solutions by richwmiller, checkley77:
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
n=7q
25q+5n=240
25q+5*(7q)=240
25q+35q=240
60q=240
q=4
n=28

Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
N=7Q
.05N+.25Q=2.40
.05*7Q+.25Q=2.40
.35Q+.25Q=2.40
.60Q=2.40
Q=2.40/.60
Q=4 NUMBER OF QUARTERS.
4*7=28 NUMBER OF NICKELS.
PROOF:
.05*28+.25*4=2.40
1.40+1.00=2.40
2.40=2.40