31 A school bus transported an excursion party to a picnic spot 150 km – InterviewSolution

1.	31 A school bus transported an excursion party to a picnic spot 150 km away. Whilereturning, it was raining and the bus had to reduce its speed by 5 km/h, and it tookone hour longer to make the return trip. Find the time taken to return.
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