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In a 200 metres race A beats B by 35 m or 7 seconds. A's time over the course is:1. 40 sec2. 47 sec3. 33 sec4. None of these |
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Answer» Correct Answer - Option 3 : 33 sec Given: In a 200 metres race A beats B by 35 m or 7 seconds. Formula used: Time = Distance/speed Calculation: According to the question, B runs 35 m in 7 second Speed of B = Distance/time ⇒ 35/7 ⇒ 5 m/sec B covers 200 m in = 200/5 ⇒ 40 second A's time over the course = (40 – 7) second ⇒ 33 second. ∴ A's time over the course is 33 second. |
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