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A man walks at a speed of 8 km / h. After every kilometre, he takes a rest for 4 minutes. How much time will he take to cover a distance of 6 km?1. 70 minutes2. 69 minutes3. 65 minutes4. 60 minutes |
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Answer» Correct Answer - Option 3 : 65 minutes Given: Speed of man = 8 km/hr. Distance = 6 km Time of rest = 4 minute Formula used: Speed = Distance/Time Calculations: ⇒ 8 km distance covered by man = 1 hours ⇒ 8 km distance covered by man = 60 minutes ⇒ 1 km distance covered by man = 60/8 minute + 4 minute (rest ) ⇒ 5km distance covered by man = 300/8 minute + 20 minute ⇒ Last 1 km distance = 60/8 minutes ⇒ Total time taken by him = (300/8) + (60/8) + 20 ⇒ Total time taken by him = 65 minutes ∴ It will take 65 minutes to cover a distance of 6 km. |
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