Question

(b) A train takes a minute to cross a stationary pole. It takes 240 seconds to cross another 3600 m long train traveling at 54 kmph. Find its speed (in kmph). (A) 108 (B) 144 (C) 90 (D) 72
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Answer 1

Answer:

(c) 90 ,,,,, ,,,,,,,,,,,,,,