What is the speed of the train in km/h?Statem | vedclass

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(D) Let the length of the train be $L$ meters and its speed be $v$ $m/s$.From statement $II$,we know $L = y$.From statement $III$,the train crosses a

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Question cannot be answered even with information in all three statements.

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(D) Let the length of the train be $L$ meters and its speed be $v$ $m/s$.From statement $II$,we know $L = y$.From statement $III$,the train crosses a signal pole in $m$ seconds. The distance covered is the length of the train $(y)$. Thus,$v = y/m$ $m/s$.From statement $I$,the train crosses a platform of length $x$ in $n$ seconds. The total distance covered is $(x + y)$. Thus,$v = (x + y)/n$ $m/s$.While we can express the speed $v$ using statements $II$ and $III$ (or $I$ and $II$),the variables $x, y, n, m$ are not defined as numerical values. Without specific numerical values for these variables,the speed cannot be calculated as a specific numerical value in $km/h$. Therefore,the question cannot be answered.

What is the speed of the train in $km/h$?
Statements:
$I.$ The train crosses an $x$ meter-long platform in $n$ seconds.
$II.$ The length of the train is $y$ meters.
$III.$ The train crosses a signal pole in $m$ seconds.

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What is the speed of the train in $km/h$?Statements:$I.$ The train crosses an $x$ meter-long platform in $n$ seconds.$II.$ The length of the train is $y$ meters.$III.$ The train crosses a signal pole in $m$ seconds.