inside a running train a person counts 21 teliphone booths in a minute, if distance between teliphone booths is 50 meter than what is the speed of train
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60kmph
He counts 21 telephone booths so the total distance is 50x20
Time taken 60 sec
50x20÷60 = 50/3 m/s
(50÷3)*(18/5)=60kmph
He counts 21 telephone booths so the total distance is 50x20
Time taken 60 sec
50x20÷60 = 50/3 m/s
(50÷3)*(18/5)=60kmph
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