how many seconds will a train 150 meters long take to cross a bridge 200 meters long if the speed of the train is 54 kmph?  Choose the correct choice from the following answers.
A) 17 sec  B) 21 sec  C) 23.3 sec  D) 27.5 sec  E) 29 sec
<gadget id="calculator">200 + 150</gadget>
<output>350</output>

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

<gadget id="calculator">54 * (5/18)</gadget>
<output>15</output>

<gadget id="calculator">350 / 15</gadget>
<output>70/3 = around 23.333333</output>

<result>C</result>
how many seconds will a train 150 meters long take to cross a bridge 200 meters long if the speed of the train is 54 kmph?
divide(add(200, 150), multiply(54, const_0_2778))
d = 150 + 200 = 350 s = 54 * 5 / 18 = 15 mps t = 350 / 15 = 23.3 sec c ) 23.3 sec