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Algebra 7 Online
OpenStudy (anonymous):

Can anyone help solve this word problem? A family has two cars. During one particular week, the first care consumed 40 gallons of gas and the second consumed 20 gallons of gas. The two cars drove a combined total of 2200 miles, and the sum of their fuel efficiencies was 75 miles per gallon. What were the fuel efficiencies of each of he cars that week?

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