Question
Download Solution PDFA truck covers three equal distances of 100 km at the speed of 200 km/hr, 300 km/hr and 600 km/hr. Find the average speed of the truck for the whole journey.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
Distances covered by the truck: 100 km, 100 km, 100 km
Speeds of the truck: 200 km/hr, 300 km/hr, 600 km/hr
Formula used:
Average speed = Total distance/Total time
Calculation:
For the first distance of 100 km at a speed of 200 km/hr:
Time taken = 100 km / 200 km/hr = 1/2 hr
For the second distance of 100 km at a speed of 300 km/hr:
Time taken = 100 km/300 km/hr = 1/3 hr
For the third distance of 100 km at a speed of 600 km/hr:
Time taken = 100 km / 600 km/hr = 1/6 hr
Total distance = 100 km + 100 km + 100 km = 300 km
Total time = 1/2 hr + 1/3 hr + 1/6 hr = 1
Average speed = 300 km/1 hr
300 km/hr
Therefore, the average speed of the truck for the entire journey is 300 km/hr.
Last updated on Jun 26, 2025
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