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cfc198
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Two swimmers start from same end, A, of a 200 meter long swimming pool 24 Jul 2019, 11:27
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C
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Difficulty:

55% (hard)

Question Stats:

50% (02:00) correct 50% (01:56) wrong based on 8 sessions

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Two swimmers start from same end, A, of a 200 meter long swimming pool. The faster one reaches the other end, B, turns back and meets the slower one at a distance of 175 meters from the starting end. Where will the slower one be when faster one reaches the starting point.

1. Midway
2. 111 mts from A
3. 89 mts from A
4. 87.5 mts from A
5. 112.5 mts from A
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C
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Two swimmers start from same end, A, of a 200 meter long swimming pool 15 Aug 2019, 00:20
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Let me try.

A-------175m---------¡----25m----B

Faster (F) one covers= 200 +25 = 225m
Slower (S) one covers= 175m

Let the speed of F be 1 m/s.

So both F and S takes 225 sec.

Speed of S = 175/225 = 7/9.

So now F takes 175 sec to reach point A, so in 175 sec S would cover=

175 * 7/9 = 135.8m

So now remaining 25m of S to reach B will be deducted, so reamining is

200- 110.8 = About 90m from A.

Hence, choice C.

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