A train 130 m long crosses a platform with a speed of 70 kmph in 20 sec; find the length of the platform?
Choose the correct choice from the following options:  A) 150  B) 145  C) 165  D) 162  E) 152
D = 130 + x   T = 20   S = 130+x/15 * 18/5 = 70 kmph.   =&gt; (130+x) * 18 = 5250   =&gt; 130 + x = 292 =&gt; x= 162 m   Answer: 162
<result>D</result>
A train 130 m long crosses a platform with a speed of 70 kmph in 20 sec; find the length of the platform?