It takes 10 s and 15 s, respectively, for two trains travelling at different constant speeds to completely pass a telegraph post. The length of the first train is 120 m and that of the second train is

(A) 2.0 (B) 10.0 (C) 12.0 (D) 22.0

• Deepshikha
• 12739 दृश्य
• 52 उत्तर