Multiple Choice Questions on A man cover a distance in t hrs if he met with an accident after 20km and he then run at his 3 5th o........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A man cover a distance in t hrs if he met with an accident after 20km and he then run at his 3 5th o...........

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After moving 10km more, man saves 10minutes. For saving of 40minutes he has to cover 40km more. So the distance is 60km ?????

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Time saved by moving the accident point depends on the reduced speed, not the original speed. When the accident occurs earlier, a larger portion of the journey is covered at the slower speed, leading to a greater delay. As the accident point moves further, the portion covered at the slower speed decreases, and the delay reduces, but not at a constant rate. So, you can not say "For saving of 40min he has to cover 40km more"..

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