SOLUTION: A jar of 13 coins has $1.25 in it. The coins are nickels and quarters. How many of each do I have?

Question 810277: A jar of 13 coins has $1.25 in it. The coins are nickels and quarters. How many of each do I have?
Answer by erica65404(394) (Show Source): You can put this solution on YOUR website!
nickels=x quarters=y
x+y=13 coins
now keep in mind that quaters are .25 and nickels are .05.
.05x+.25y=1.25
solve the first equation for y then plug into the above equation to find the amount of nickels.

we now know we have 10 nickels.
plug 10 into the first equation to find quarters

we have 3 quarters and 10 nickels.
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