2012 · Q3
A train takes 10 s to cross a pole and 20 s to cross a platform of length 200 m. What is the length of the train?
Elementary MathematicsArithmetic
- A400 m
- B300 m
- C200 m
- D100 m
Explanation
If speed is v, length = 10v and length+200 = 20v, giving v = 20 m/s and length 200 m.