A 300 meter long train crosses a plaƞorm in 39 seconds while it crosses a signal pole in 18 seconds.
What is the length of the plaƞorm. Choose the correct choice:
A) 310 meter	B) 335 meter	C) 345 meter	D) 350 meter	E) none of these

Rationale: explanation : speed = distance / ɵ me = 300 / 18 = 50 / 3 m / sec let the length of the pla ƞ orm be x meters then distance = speed ∗ timex + 300 = 503 ∗ 39 = > 3 ( x + 300 ) = 1950 = > x = 350 meters answer : d
Answer: D