Sainik School Entrance Exam 2020 Solved Paper

Question : 13 of 150

Marks: +1, -0

The ratio between the speeds of two trains

\A

and

\B

is 3 : 5. If train B runs

300 {\km}

in 4 hours, the speed of train

\A

will be

Solution:

(d) Suppose that the speed of two trains

{\A}

and

{\B}

3 s

and

5 s

From the question, speed of train

{\B}={300}/{4}

km/h.

=75 \km

\hr

⇒5s=75

⇒s=15 \km

\hr

∴ The speed of the train

\A

=3s=3×15=45 \km

\h

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