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At a pet store, it costs $5 to wash a cat and $7.50 to wash a dog. Last week the store made $60 from washing cats and dogs. If 6 cats were washed, write and solve a linear equation to find how many dogs were washed.
If you let x equal the number of cats washed and y equal the number of dogs washed then you can make the equation: 5x+7.5y=60 You can then put the number of cats washed into the equation: 5(6)+7.5y=60 30+7.5y=60 7.5y=30 y=4 So 4 dogs were washed
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