Asked by lala
A car completes a trip in 20 minutes. for the first half of the trip the speed of the car was 100km/h and the speed for the second half of the trip was 90km/h. How far did the car travel (in km) if the distance for the first part is the same as the second part
Answers
Answered by
Steve
Let the total distance be 2d. Then, since time = distance/speed,
d/100 + d/90 = 1/3
d/100 + d/90 = 1/3
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