sarah has $12.45 in quarters and nickels. She has 39 more nickels than quarters. How many of each coin does she has?
sarah has $12.45 in quarters and nickels. She has 39 more nickels than quarters. How many of each coin does she has?
Let the number of quarters be:q, then the number of nickels is:
q + 39, but we have:
.25q + (q + 39).05=12.45
.25q +.05q + 1.95=12.45
.30q=12.45 - 1.95
.30q=10.50 divide both sides by.10
q=10.5/.30
q=35 number of quarters, and
35 + 39=74 number of nickles, so that:
(35 X .25) + (74 X .05)=$12.45
