Question
Download Solution PDFA car driver travels from plane to hill station which are 200 km apart at an average speed of 40 km/h. In the return trip, he covers the same distance at an average speed of 20 km/h. Then, the average speed of the car over the entire distance of 400 km is
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is option 4.
Given: A car driver travels from plane to hill station which are 200 km apart at an average speed of 40 km/h. In the return trip, he covers the same distance at an average speed of 20 km/h.
Concept Used: Distance = Speed x Time
Calculation:
⇒ Average speed = \(\dfrac{Total \; distance}{Total \; time}\)
⇒ Total distance = 2 x 200 = 400 km
⇒ Total time from plane to hill and hill to plane = \(\dfrac{200}{40} + \dfrac{200}{20}\) = 15 hours
⇒ Average speed = \(\dfrac{400}{15}\) = 26.67 km/hr
Hence, the average speed of the entire distance is 26.67 km/hr.
Last updated on Jun 19, 2025
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