Question 73209: Sarah has $3.50 in quarters and nickels. She has 2 more quarters than nickels. I need an algebra equation for this. Please help!!
Answer by ankor@dixie-net.com(22740)   (Show Source):
You can put this solution on YOUR website!
Write an equation for each statement
:
"Sarah has $3.50 in quarters and nickels."
.05n + .25q = 3.50
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" She has 2 more quarters than nickels. "
q = n + 2, this means we can substitute (n+2) for q, right?
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I need an algebra equation for this.
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Using the first equation, .05n + .25q = 3.50, substitute (n+2) for q, find n
.05n + .25(n+2) = 3.50
.05n + .25n + .50 = 3.50
.30n = 3.50 - .50
.30n = 3
n = 3/.3
n = 10 nickels
:
I'll let you find the number of quarters. Check your solutions in the 1st eq
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