Puzzle - Bikes and Distance

Puzzle

The distance between two stations X and Y is 230 kilometers. Two bikes start simultaneously from X and Y respectively, towards each other and the distance between them after 3 hours is 20 km. If the speed of one bike is less than that of the other by 10 km/hour, now your task is to find out the speed of slower bike.

Important points of puzzle

1. Distance between stations id 230 km.
2. Two bikes start at the same time from opposite ends.
3. Bikes were moving towards each other.
4. Distance between them after 3 hours is 20 km.
5. If speed of one bike is less than other by 10 km/hour.
6. Find out the speed of slower bike.

Answer

30 km/hour

Reason

In three hours the two bikes cover 210 km. Hence, the sum of speeds must be 70 km/hour and the slower bike’s speed would be 30 km/hour.