A 300 meter long train crosses a platform in 39 seconds while it crosses a signal pole in 18 seconds. What is the length of the platform.  Choose the correct choice
A) 310 meter B) 335 meter C) 345 meter D) 350 meter E) 375 meter
Explanation:   Speed = 350 meteristance/time = 300/18 = 50/3 m/sec   Let the length of the platform be x meters   then   350 meteristance=Speedâˆ—Timex+300=50/3 X 39   =&gt;3(x+300)=1950=&gt;x=350 meters   ANSWER IS 350 meter
<result>D</result>
A 300 meter long train crosses a platform in 39 seconds while it crosses a signal pole in 18 seconds. What is the length of the platform.