SOLUTION: sam has a total of 28 coins in his piggy bank consisting of dimes and quarters If he has $4.30 in his bank how many quarters does he have?

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Question 426777: sam has a total of 28 coins in his piggy bank consisting of dimes and quarters If he has $4.30 in his bank how many quarters does he have?
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
x+y=28
10x+25y=430
10x+10y=280
15y=150
y=10
x=18
Sam has 18 dimes and 10 quarters..