Multiple choice

A rides from his house at 12 noon towards B's house at a speed of 8 km/hour. After 1 hour, B rides from his house towards A's at a speed of 7 km/hour, If the distance between the two houses 68 km, the time when they meet is-

  1. 5 PM

  2. 6 PM

  3. 3 PM

  4. 4 PM

  5. None of these

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A starts at 12 noon at 8 km/h. After 1 hour, A has traveled 8 km. At 1 PM, B starts at 7 km/h towards A. Remaining distance = 68 - 8 = 60 km. Relative speed = 8 + 7 = 15 km/h. Time to meet = 60/15 = 4 hours. They meet at 1 PM + 4 hours = 5 PM. Option A matches.