a train running at the speed of 60 km / hr crosses a pole in 30 seconds. what is the length of the train? Pick.
A) 500 m
B) 620 m
C) 872 m
D) 150 m
E) 765 m
<gadget id="calculator">60 * 1_000</gadget>
<output>60_000</output>

<gadget id="calculator">60_000 / 3_600</gadget>
<output>50/3 = around 16.666667</output>

<gadget id="calculator">(50/3) * 30</gadget>
<output>500</output>

<result>A</result>
a train running at the speed of 60 km / hr crosses a pole in 30 seconds. what is the length of the train?
multiply(divide(multiply(60, const_1000), const_3600), 30)
"speed = ( 60 * 5 / 18 ) m / sec = ( 50 / 3 ) m / sec length of the train = ( speed x time ) = ( 50 / 3 * 30 ) m = 500 m . answer : a"