SOLUTION: mary has a total of 23 coins made up of nickels and quarters that make up a sum of $3.15. how many more nickels than quarters does she have

Question 821576: mary has a total of 23 coins made up of nickels and quarters that make up a sum of $3.15. how many more nickels than quarters does she have
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
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x + y = 23
5x + 25y = 315
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copy and paste the above standard form linear equations in to this solver:
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answer:
x= nickels = 13
y= quarters = 10
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