A train 120 m long crosses a platform with a speed of 60 kmph in 15 sec; find the length of the platform?	Choose the correct choice from the following answers
A) 110	B) 130	C) 120	D) 125	E) 135
D = 120 + x   T = 15   S = 120+x/15 * 18/5 = 60 kmph.   =&gt; (120+x) * 18 = 4500   =&gt; 120 + x = 250 =&gt; x= 130 m   Answer: 130
<result>B</result>
A train 120 m long crosses a platform with a speed of 60 kmph in 15 sec; find the length of the platform?