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The cost of 8 muffins and 2 quarts of milk is $18. The cost of 3 muffins and 1 quart of milk is $7.50. How much does 1 muffin and 1 quart of milk cost? (please show work)
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The cost of 8 muffins and 2 quarts of milk is $18. The cost of 3 muffins and 1 quart of milk is $7.50. How much does 1 muffin and 1 quart of milk cost? (please show work)

User Zveratko
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1 Answer

2 votes
m=muffin
q=quart of milk
3m+1q=7.5
q=-3m+7.5
8m+2q=18
8m+2(-3m+7.5)=18
8m-6m+15=18
2m+15=18
2m=3
m=1.5
q=-3m+7.5
q=-3x1.5+7.5
q=-4.5+7.5
q=3
m+q=1.5+3
m+1=4.5

User Picomancer
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