Problema Solution
Part A: Elena and her husband Marc both drive to work. Elena’s car has a current mileage (total distance driven) of 9,000 and she drives 18,000 miles more each year. Marc’s car has a current mileage of 60,000 and he drives 7,000 miles more each year. Will the mileages for the two cars ever be equal?
Answer provided by our tutors
Let 'x' represent the number of years after which the millage will be equal, that is:
9,000 + 18,000x = 60,000 + 7,000x
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click here to see the equation solved for x
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x = 51/11
x = 4 7/11 years
x = 4.6 years
After 4.6 years the millage for the two cars will be equal.