how long does a train 100 m long travelling at 60 kmph takes to cross a bridge of 120 m in length?	Choose one:
A) 15.8 sec
B) 13.2 sec
C) 12.4 sec
D) 16.8 sec
E) 11.8 sec
<gadget id="calculator">100 + 120</gadget>
<output>220</output>

<gadget id="calculator">10 / 36</gadget>
<output>5/18 = around 0.277778</output>

<gadget id="calculator">60 * (5/18)</gadget>
<output>50/3 = around 16.666667</output>

<gadget id="calculator">220 / (50/3)</gadget>
<output>66/5 = around 13.2</output>

<result>B</result>
how long does a train 100 m long travelling at 60 kmph takes to cross a bridge of 120 m in length?
divide(add(100, 120), multiply(60, const_0_2778))
"b 13.2 sec d = 100 + 120 = 220 m s = 60 * 5 / 18 = 50 / 3 t = 220 * 3 / 50 = 13.2 sec answer is b"