Two donkeys are standing 400 meters 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?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 80
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Understanding |
Application |
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First donkey can run at a speed of 3 m/sec and the second can run at 2 m/sec. |
So, Relative speed of 2 monkeys = 3 + 2 = 5 m/sec |
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Distance = 400 meters |
So, Required time = 400/5 = 80 sec |