a train is 360 meter long is running at a speed of 45 km / hour. in what time will it pass a bridge of 240 meter length?  Choose the correct choice from the following answers: A) 65 seconds B) 46 seconds C) 40 seconds D) 97 seconds E) 48 seconds
<gadget id="calculator">360 + 240</gadget>
<output>600</output>

<gadget id="calculator">45 * 1_000</gadget>
<output>45_000</output>

<gadget id="calculator">45_000 / 3_600</gadget>
<output>25/2 = around 12.5</output>

<gadget id="calculator">600 / (25/2)</gadget>
<output>48</output>

<result>E</result>
a train is 360 meter long is running at a speed of 45 km / hour. in what time will it pass a bridge of 240 meter length?
divide(add(360, 240), divide(multiply(45, const_1000), const_3600))
"speed = 45 km / hr = 45 * ( 5 / 18 ) m / sec = 25 / 2 m / sec total distance = 360 + 240 = 600 meter time = distance / speed = 600 * ( 2 / 25 ) = 48 seconds answer : e"