a train 150 m long running at 72 kmph crosses a platform in 28 sec. what is the length of the platform?	Answers
A) 410 m B) 354 m C) 450 m D) 350 m E) 250 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">28 * 20</gadget>
<output>560</output>

<gadget id="calculator">560 - 150</gadget>
<output>410</output>

<result>A</result>
a train 150 m long running at 72 kmph crosses a platform in 28 sec. what is the length of the platform?
subtract(multiply(28, multiply(72, const_0_2778)), 150)
"a 410 a = ( 72 * 5 / 18 ) * 28 - 150 = 410"