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If a person walks at 14 km/h instead of 10 km/h, he would have walked 20 km more. The actual distance travelled by him is:

1. 50 km
2. 56 km
3. 70 km
4. 80 km

Correct answer: 50 km

Solution

If the person walks for the same time, the extra distance covered is due to the speed difference of 4 km/h. So 4t = 20, giving t = 5 hours. The actual distance at 10 km/h is 10 × 5 = 50 km.

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