Two stations P and Q are 42 km apart. A person starts from P, walks at 4 km/h towards Q and meets another person coming from Q towards P after 6 hours.
Find the rate at which the second person is walking, if both the persons start walking at the same time.
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The rate at which the second person is walking towards P is 3 km/hr.
- Two stations P and Q are 42 km apart.
- A person starts from P at 4km/hr towards Q and Q starts with some rate towards P.
- Now they meet each other after 6 hours.
- Therefore the distance covered by both of them is equal to 42 km.
- Let the rate at which the other person walks towards P be x km/hr.
Now, 42 = 4×6 + x ×6 (Distance = speed×time)
As both the persons walk for 6 hours to meet other person.
42 = 24 + 6x
18 = 6x
x = 3 km/hr.
- The rate at which the other person walks towards P is 3 km/hr.
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