Multiple choice general knowledge math & puzzles

B is 50% faster than A. If A starts at 9 A.M. and B starts at 10 A.M. A travels at a speed of 50 km/hr. If A and B are 300 kms apart, The time when they meet when they travel in opposite direction is

  1. 10 am

  2. 01:00pm

  3. 12:00pm

  4. 12:30pm

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

A's speed is 50 km/hr. B is 50% faster, so B's speed is 75 km/hr. By 10 A.M., A has traveled 50 km, leaving 250 km between them. Traveling in opposite directions (towards each other), their relative speed is 125 km/hr. They meet in $250 / 125 = 2$ hours, which is 12:00 P.M.