Ajith and Rana walk around a circular course 115 km in circumference, starting together from the same point. If they walk at speed of 4 and 5 kmph respectively, in the same direction, when will they meet ?

For Competitive Exams

220km

180km

after 20 hours

after 115 hours

Explanation:
Rana is the faster person.
He gains 1 km in 1 hour.
So Rana will gain one complete round over
Ajith in 115 hours.
i.e. they will meet after 115 hours.

Next Question

There are 4 people who has to cross a stretch of 300 km. They normally run at a speed of 10 kmph. One of them has a bike that travels at 50 kmph. The bike first takes one person alone and crosses the stretch while the other two keep running. Then he comes back without wasting time and picks up another person from the way, drives him across the stretch, and does the same for the last person. How long does this whole process take?

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