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SSC Selection Post 2022 PYQ — Question 59

SSC Selection Post - Matriculation Level 2022 - 3 Aug 2022 - Shift 1 • Quantitative Aptitude • Q59

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A 315-m-long train is moving at a speed of 24 km/h. It will cross a man coming from the opposite direction at a speed of 3 km/h in __________.

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Correct answer: C

Explanation

The correct answer is option 3 i.e. 42 sec.

Relative speed is = 24 + 3 = 27  km/h

Convert km/h to m/s = 27×10003600=7.527 \times \frac{1000}{3600} = 7.5  m/s

Time = Distance / Speed =3157.5=42 \frac{315}{7.5} = 42  seconds