Question

Katherine and Beatrice are 20 miles apart when they start moving towards each other. Katherine runs at a constant speed of 5 mph and Beatrice walks at a constant speed of 3 mph. How long does it take them to meet

Answer 1

2 hours and 30 minutes.

Explanation:

Katherine and Beatrice are 20 miles apart and they start to move towards each other.

It is given that Katherine runs at a constant speed of 5 mph and Beatrice walks at a constant speed of 3 mph.

As they are moving towards each other, so the resultant speed of them will be (5 + 3) = 8 miles per hour.

So, they will cover 20 miles distance with this 8 mph resultant speed.

Therefore, the time they will take to meet each other will be
`(20)/(8) = 2.5` hours i.e. 2 hours and 30 minutes. (Answer)