Question: the length of a train and that of a platform are equal . if with a speed of 90 k / hr , the train crosses the platform in one minute , then the length of the train ( in metres ) is :
A) 400
B) 525
C) 750
D) 850
E) none
Correct answer: C
Grade: 7 | Topic: Expressions and Equations | Difficulty: Hard | Standard: 7.EE.B.4