in what time will a railway train 120 m long moving at the rate of 70 kmph pass a telegraph post on its way?  Pick:
A) 3 sec
B) 4 sec
C) 5 sec
D) 6 sec
E) 7 sec
<gadget id="calculator">10 / 36</gadget>
<output>5/18 = around 0.277778</output>

<gadget id="calculator">70 * (5/18)</gadget>
<output>175/9 = around 19.444444</output>

<gadget id="calculator">120 / (175/9)</gadget>
<output>216/35 = around 6.171429</output>

<result>D</result>
in what time will a railway train 120 m long moving at the rate of 70 kmph pass a telegraph post on its way?
divide(120, multiply(70, const_0_2778))
"t = 120 / 70 * 18 / 5 = 6 sec answer : d"