SOLUTION: Beatrice has coins in her piggy bank worth $7.40, all dimes and quarters. She has 3 more quarters than the number of dimes. How many quarters and dimes does she have?

Question 815415: Beatrice has coins in her piggy bank worth $7.40, all dimes and quarters. She has 3 more quarters than the number of dimes. How many quarters and dimes does she have?
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
10d + 25k = 740
k = d + 3
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10d + 25k = 740
10d + 25(d + 3) = 740
10d + 25d + 75 = 740
35d = 665
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d = 19
k = 22
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