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A family has two cars. During one particular week, the first car consumed 15 gallons of gas and the second consumed 35 gallons of gas.

A family has two cars. During one particular week, the first car consumed 15

gallons of gas and the second consumed 35

gallons of gas. The two cars drove a combined total of 1525

miles, and the sum of their fuel efficiencies was 55

miles per gallon. What were the fuel efficiencies of each of the cars that week?

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