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Delhi is at a distance of 200 km from Ambala. A sets out from Ambala at a speed of 30 km/h and B sets out at the same time from Delhi at a speed of 20 km/h. When they will meet each other ?A 2 hours B 3 hours C 5 hours D 4 hours

Question

Delhi is at a distance of 200 km from Ambala. A sets out from Ambala at a speed of 30 km/h and B sets out at the same time from Delhi at a speed of 20 km/h. When they will meet each other ?A 2 hours B 3 hours C 5 hours D 4 hours

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Solution

The problem can be solved by using the concept of relative speed.

Step 1: Calculate the relative speed. When two objects are moving towards each other, their relative speed is the sum of their individual speeds. So, the relative speed of A and B is 30 km/h + 20 km/h = 50 km/h.

Step 2: Calculate the time they will meet. The time taken for two objects to meet each other is the total distance between them divided by their relative speed. So, the time taken for A and B to meet is 200 km / 50 km/h = 4 hours.

So, the answer is D, 4 hours.

This problem has been solved

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