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A takes 5 hours to travel 320 km while B takes 7 hours to travel 301 km. Find the time A will take to cover a distance that B covers in 19 hours after reducing his speed by 13 km/hr.1. 8.9 hr2. 9.8 hr3. 7.8 hr4. 8.7 hr |
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Answer» Correct Answer - Option 1 : 8.9 hr Given: A takes 5 hours to travel 320 km while B takes 7 hours to travel 301 km. Formula Used: Distance = time x speed Calculation: Speed A = (320/5) km/hr = 64 km/hr Speed of B = (301/7) km/hr = 43 km/hr Now, distance covered by B in 19 hours after reducing his speed by 13 km/hr = (30 × 19) km = 570 km. Time required = (570/64) hours = 8.9 hours ∴ A will take 8.9 hours. |
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