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.	Choices
A) 310 meter  B) 335 meter  C) 345 meter  D) 350 meter  E) None of these
Explanation:   Speed = 350 meteristance/time = 300/18 = 50/3 m/sec   Let the length of the platform be x meters   then   350 meteristance=Speed∗Time   x+300=50/3∗39   =&gt;3(x+300)=1950   =&gt;x=350 meters   Option 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.