A car completes its journey in 10 minutes. For the first half of the distance the speed was 60km/h and for the second half the speed was 40km/h. how far was the journey?

Question

Mathematics

Ashleigh Erickson

16 July, 12:45

A car completes its journey in 10 minutes. For the first half of the distance the speed was 60km/h and for the second half the speed was 40km/h. how far was the journey?

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Answers (1)

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Duncan Guzman · Answer 1

Let the total distance be x.

(x/2) / 60 + (x/2) / 40 = (10minutes) / (60minutes/hour)

x/120+x/80 = 1/6

multiply by common denominator 240

2x+3x = 40

5x=40

x=8 km