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How many kilometres from the starting point will they draw level?

+1 vote
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Two cars set off from the same point to travel the same journey.

The first car sets off two minutes before the second car.

If the first car travels at 40km/h and the second car travels at 90km/h,

how many kilometres from the starting point will they draw level?

posted Sep 11, 2015 by Akriti

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1 Answer

0 votes

2.4 km
In the first two minutes car A has travelled 40 * 2/60 = 4/3 km.
Car B travels 50 km/h faster, so it will take him 4/3 / (50/60) = 1.6 minutes to catch up to car A.
In that time car B travels 1.6 * (90/60) = 2.4 km.

answer Sep 11, 2015 by Jcm



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