A man in a train notice that he can count 21 telephone posts in one minute.. If they are known to be 50 meters apart, then at what speed is the train travelling?

A 60 kmph
B 55 kmph
C 63 kmph
D 57 kmph

Correct Answer: 60 kmph

Bissoy MCQ
#পিএসসি ও অন্যান্য নিয়োগ পরীক্ষা #গণিত #ট্রেন ও  গতিবেগ (Train & Speed) #সিকিউরিটি প্রিন্টিং কর্পোরেশন বাংলাদেশ | সহকারী ব্যবস্থাপক- 26-11-2021

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