SOLUTION: An engineer traveled 170 mi by car and then an additional 645 mi by plane. The rate of the plane was three times the rate of the car. The total trip took 7 h. Find the rate of the

Algebra ->  Equations -> SOLUTION: An engineer traveled 170 mi by car and then an additional 645 mi by plane. The rate of the plane was three times the rate of the car. The total trip took 7 h. Find the rate of the       Log On


   

Question 1173838: An engineer traveled 170 mi by car and then an additional 645 mi by plane. The rate of the plane was three times the rate of the car. The total trip took 7 h. Find the rate of the car.
Answer by josgarithmetic(39800) About Me  (Show Source):
You can put this solution on YOUR website!
            SPEED        TIME              DISTANCE

CAR           c          170/c               170

PLANE        3c          645/(3c)            645

TOTAL                      7

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