a train 250 m long running at 72 kmph crosses a platform in 30 sec. what is the length of the platform?	Pick one:
A) 350 m	B) 200 m	C) 250 m	D) 270 m	E) 300 m
<gadget id="calculator">10 / 36</gadget>
<output>5/18 = around 0.277778</output>

<gadget id="calculator">72 * (5/18)</gadget>
<output>20</output>

<gadget id="calculator">30 * 20</gadget>
<output>600</output>

<gadget id="calculator">600 - 250</gadget>
<output>350</output>

<result>A</result>
a train 250 m long running at 72 kmph crosses a platform in 30 sec. what is the length of the platform?
subtract(multiply(30, multiply(72, const_0_2778)), 250)
"d = 72 * 5 / 18 = 30 = 600 â € “ 250 = 350 m answer : a"