Question: a train of length l is traveling at a constant velocity and passes a pole in t seconds . if the same train travelling at the same velocity passes a platform in 3.5 t seconds , then what is the length of the platform ?
A) 0.5 l
B) 1.5 l
C) 2.5 l
D) 3.5 l
E) 4.5 l
Correct answer: C
Grade: 6 | Topic: Ratios and proportions | Difficulty: Hard | Standard: 6.RP.A.3b