It takes 12 minutes for Taro and 8 minutes for Jiro to run the surroundings of a pond 1 round.
When they started from the same point to the same direction, every how many minutes is Taro passed by Jiro ?
Answer
24 minutes
Solution
The surrounding of a pond is set to 24.
The speed of Taro is 24 / 12 = 2 and Jiro is 24 / 8 = 3.
24 / (3 - 2) = 24 minutes
