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Select the correct answerTwo donkeys are standing 400 metres apart. First donkey can run at a speed of 3 m/sec and the second can run at 2 m/sec. If two donkeys run towards each other after how much time (in sec) will they bump into each other?Options604004080

Question

Select the correct answerTwo donkeys are standing 400 metres apart. First donkey can run at a speed of 3 m/sec and the second can run at 2 m/sec. If two donkeys run towards each other after how much time (in sec) will they bump into each other?Options604004080

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Solution

To solve this problem, we need to understand that when two objects are moving towards each other, their relative speed is the sum of their individual speeds.

Here, the first donkey is running at a speed of 3 m/sec and the second donkey is running at a speed of 2 m/sec. So, their relative speed is 3 m/sec + 2 m/sec = 5 m/sec.

The distance between the two donkeys is 400 meters.

We know that time = distance/speed.

So, the time it will take for the two donkeys to bump into each other is 400 meters / 5 m/sec = 80 seconds.

So, the correct answer is 80.

This problem has been solved

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