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Neeraj reaches school in a car at an average speed of 20 km/h. While returning; his speed becomes30 km/h due to lesser crowd. What is the average speed of Neeraj's car for the whole journey? |
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Answer» Answer: 24 KM/hr Explanation: LET the total distance covered be 2x so for x km, he travel at speed of 20km/hr and NEXT x km at speed of 30km/hr. (see attachment for SOLVED answer) |
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