If an athelete ran the first half of a 200 meter race in 10 : Quant Question Archive [LOCKED]
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# If an athelete ran the first half of a 200 meter race in 10

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If an athelete ran the first half of a 200 meter race in 10 [#permalink]

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30 Oct 2007, 06:29
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

If an athelete ran the first half of a 200 meter race in 10 seconds and the second half in 12 seconds, by how much was his average speed over the first half bigger than that over the second?

2 kmh
3 kmh
3.6 kmh
6 kmh
7.2 kmh
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30 Oct 2007, 06:37
looks like D to me...don't forget to convert m->km and s->hr
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30 Oct 2007, 06:40
100 m in 10 sec = 36 kmph
100 m in 12 sec = 30 kmph

Ans D
30 Oct 2007, 06:40
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