SOLUTION: A car and a bus set out at 5 P.M. from the same point headed in the same direction. The average speed of the car is twice the average speed of the bus. In 2 h, the car is 72 mi ahe

Question 1151924: A car and a bus set out at 5 P.M. from the same point headed in the same direction. The average speed of the car is twice the average speed of the bus. In 2 h, the car is 72 mi ahead of the bus. Find the rate of the car.
Answer by ikleyn(52898) (Show Source): You can put this solution on YOUR website!
.


Let x be the rate of the car, in miles per hour.


Then the rate of the bus is 0.5x.


In 2 hours


         2x - 2*(0.5x) = 72


It is your basic equation, which is the literal translation from English to Math.


Simplify and solve for x.


         2x - x = 72

          x     = 72.


ANSWER.  The rate of the car is  72 miles per hour.

Solved.

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