A train travels at a speed of 40km/hr and another train at a speed of 20m/s. what is the ration of speed of the first train to that of the second train?
Correct Answer: Description for Correct answer:
\( \Large S_{1} =40km/hr \) = \( \Large \left(\frac{40 \times 5}{18}\right) \)m/sec
=\( \Large \frac{20 \times 5}{9} \)m/sec
and \( \Large S_{2} = 20 m/sec \)
\( \Large \frac{S_{1}}{S_{2}} = \frac{20 \times 5}{9 \times 20} = \frac{5}{9}\)
\( \Large S_{1}:S_{2} = 5 : 9 \)
Option (B)is correct.
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