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Rahul runs from point A to B at 3 m/s and returns at 2 m/s. Sahil runs from point A to B at 4 m/s and returns at 1 m/s. If the distance between A to B is 1200 m, then what is time taken by Sahil and Rahul respectively?1. 1000 seconds, 1500 seconds2. 1500 seconds, 1000 seconds3. 100 seconds, 150 seconds4. 150 seconds, 100 seconds5. None of these |
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Answer» Correct Answer - Option 2 : 1500 seconds, 1000 seconds Given: Speed of Rahul from A to B = 3 m/s Speed of Rahul from B to A = 2 m/s Speed of Sahil from A to B = 4 m/s Speed of Sahil from B to A = 1 m/s Distance between A and B = 1200 m Formula used: Speed = Distance/Time Calculations: Time taken by Rahul to complete whole journey = (1200/3) + (1200/2) ⇒ 400 + 600 ⇒ 1000 sec Time taken by Sahil to complete whole journey = (1200/4) + (1200/1) ⇒ 300 + 1200 ⇒ 1500 sec ∴ The time taken by Sahil and Rahul respectively is 1500 seconds and 1000 seconds. |
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