a train 310 meters long is running with a speed of 60 kmph. in what time will it pass a man who is running at 6 kmph in the direction opposite to that in which the train is going?	Choose the correct choice from the following:
A) 4	B) 6	C) 5	D) 17	E) 13
<gadget id="calculator">310 / 1_000</gadget>
<output>31/100 = around 0.31</output>

<gadget id="calculator">60 + 6</gadget>
<output>66</output>

<gadget id="calculator">(31/100) / 66</gadget>
<output>31/6_600 = around 0.004697</output>

<gadget id="calculator">3_600 * (31/6_600)</gadget>
<output>186/11 = around 16.909091</output>

<result>D</result>
a train 310 meters long is running with a speed of 60 kmph. in what time will it pass a man who is running at 6 kmph in the direction opposite to that in which the train is going?
multiply(const_3600, divide(divide(310, const_1000), add(60, 6)))
"speed of train relative to man = ( 60 + 6 ) km / hr = 66 km / hr [ 66 * 5 / 18 ] m / sec = [ 55 / 3 ] m / sec . time taken to pass the man = [ 310 * 3 / 55 ] sec = 17 sec answer : d"