Question: a train covers a distance of 12 km in 10 minutes . if it takes 9 seconds to pass a telegraph post , then the length of the train is
A) 100 m
B) 120 m
C) 140 m
D) 160 m
E) 180 cm
Correct answer: E
Grade: 7 | Topic: Expressions and Equations | Difficulty: Medium | Standard: 7.EE.B.4