SarkariPYQ

SSC GD 2023 PYQ — Question 52

SSC GD Constable (English) - 27 Jan 2023 - Shift 3 • Quantitative Aptitude • Q52

Back to paper

A lady goes from home to office at a speed of 40 km/h, and returns back at a speed of 70 km/h. What is her average speed during the journey?

Show answer & explanation

Correct answer: A

Explanation

The correct answer is option 1 i.e. 501011{50}\frac{10}{11}.

Let the distance between the office and home be 280 km

Time = Distance/Speed

Time taken from home to office = 280/40 = 7 hrs

Time taken from office to home = 280/70 = 4 hrs

Average speed = Total distance/Total time

Average speed = (280 + 280)/(7 + 4) = 560/11 = 501011{50}\frac{10}{11}