Distance between A and B is 72 km. Two men started walking from A and B at the same time towards each other. The person who started from A traveled uniformly with average speed of 4 km/hr. The other man traveled with varying speed as follows: In the first hour his speed 2 km/hr, in the second hour it was 2.5 km/hr, in the third hour it was 3 km/hr, and so on. When / where will they meet each other?

  • 17 hours after starting
  • 210 hours after starting
  • 335 km from A
  • 4Mid-way between A and B
Answer:- 1
Explanation:-

Solution:
They covered the distance in this way together in different hours.
6+6.5+7+7.5+8+8.5+9+9.5+10 = 72 Means,they'll meet at the 9th hr.
So,In that time A will cover = 4*9 = 36km.
They will meet in Midway.

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