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SSC CGL 2024 PYQ — Question 53

SSC CGL - 10 Sep 2024 - Shift 1 • Quantitative Aptitude • Q53

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A bus travels 131\over3 of the distance initially at a speed of 40 km/h, the next 131\over3 of the distance 50 km/h, and the final 131\over3 of the distance at 60 km/h. Find the average speed of the bus for the entire journey. (Rounded off to two decimal places)

Show answer & explanation

Correct answer: A

Explanation

The correct answer is option 1 i.e. 48.65 km/h.

Let the total distance to be covered = 600 km

Average Speed = Total Distance/Total Time

Average Speed = 60020040+20060+20050\frac{600}{\frac{200}{40}+\frac{200}{60}+\frac{200}{50}} = 6005+3.33+4\frac{600}{5+3.33+4} = 600/12.33 = 48.66 km/h