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SSC CPO 2022 PYQ — Question 117

SSC CPO - 9 Nov 2022 - Shift 3 • Quantitative Aptitude • Q117

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A man goes from place A to B at a speed of 12 km/h and returns from B to A at a speed of 18 km/h. His average speed for the entire journey is:

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Correct answer: A

Explanation

The correct answer is Option 1 i.e. 142514 \frac{2}{5} km/h.

Average speed = 2 × a × b ÷ (a + b)

= 2 × 12 × 18 ÷ (12 + 18)

= 432 ÷ 30

= 142514 \frac{2}{5}