Question
Download Solution PDFR goes to the post office from home covering a distance of 5 km and 400 metres in half an hour, and then goes to office covering a distance of 25 km and 750 metres in 90 minutes. What is his average speed from home to office in km/h?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven
Distance covered from home to post office = 5 km + 400 m = 5.4 km
Time taken = 0.5 hour
Distance covered from post office to office = 25 km + 750 m = 25.75 km
Time taken = 1.5 hours
Concept:
Average speed = Total distance/Total time
Calculation:
Total distance = 5.4 km + 25.75 km = 31.15 km
Total time = 0.5 hr + 1.5 hr = 2 hr
Average speed = 31.15 km/2 hr
Therefore, the average speed from home to office is 15.575 km/h.
Last updated on Jun 30, 2025
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