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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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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?

User Nagual
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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
User Ganesh Ghalame
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