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The distance between two station A and B is 1000 km. A train starts from A and moves towards B at an average speed of 60 km/hr. Another train starts from B, 2 hours later than the train from A, and moves towards A at an average speed of 50 km/hr. When will the two trains cross each other after A starts journey?

The distance between two station A and B is 1000 km. A train starts from A and moves towards B at an average speed of 60 km/hr. Another train starts from B, 2 hours later than the train from A, and moves towards A at an average speed of 50 km/hr. When will the two trains cross each other after A starts journey? Correct Answer 10 hours

Given:

The distance between two stations A and B is 1000 km

A train starts from A and moves towards B at an average speed of 60 km/hr

2 hours later

Another train starts from B moves towards A at an average speed of 50 km/hr

Formula Used:

Distance = Speed × Time 

Calculation:

Let the two trains will meet each other after be x hours

According to the problem,

⇒ 60x + 50(x – 2) = 1000

⇒ 110x – 100 = 1000

⇒ x = 10

∴ The two trains will cross each other after 10 hours after A starts journey.

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