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Mr. Kumar drives to work at an average speed of 48 km per hour. The time taken to cover the first 60% of the distance is 10 minutes more than the time taken to cover the remaining distance. How far is his office?1. 30 Km2. 40 Km3. 48 Km4. 56 Km |
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Answer» Correct Answer - Option 2 : 40 Km Given: Mr. Kumar drives to work at an average speed of 48 km per hour The time taken to cover the first 60% of the distance is 10 minutes more than the time taken to cover the remaining distance. Concept used: When the speed Is constant then the ratio of Distance and Time is directly proportional Speed = Distance/Time Calculation: The ratio of Time is ⇒ 60x : 40x = 3x : 2x According to the questions ⇒ 3x - 2x = 10 mins ⇒ x = 10 minx Tota time = 5x = 50 mins ⇒ Distance = 48 × (50/60) ⇒ Distance = 40 km. ∴ Mr. Kumar office is 40 km away. |
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