SSC CHSL 2025 · PYQ · Time, Speed and Distance · medium
A person travels a total distance of 480 km, partly by car at a speed of 80 km/h and the rest by bike at 40 km/h. If 75% of the total distance is covered by car, find the approximate average speed of the entire journey.
A.44 km/h
B.64 km/h✓ Correct
C.28 km/h
D.56 km/h
Explanation
Car distance = 360 km, time = 360/80 = 4.5 hrs. Bike distance = 120 km, time = 120/40 = 3 hrs. Total time = 7.5 hrs. Average speed = 480/7.5 = 64 km/h.
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