Question
A car travels 225 km in 5 hours at its normal speed. If
it covers 90 km at this regular speed and then travels another 135 km at a speed that is 20% faster than usual, how much time does it take for the car to cover both distances?Solution
Actual speed of car = 225/5 = 45 km/hr Increased speed = 1.2 × 45 = 54 km/hr Time taken by car to cover the distances = (90/45) + (135/54) = 4 hours 30 minutes
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