How many seconds will a 500 metre long train take to cross a man walking with a speed of 3km/hr in the direction of the moving train if the speed of the train is 63km/hr?

How many seconds will a 500 metre long train take to cross a man walking with a speed of 3km/hr in the direction of the moving train if the speed of the train is 63km/hr? Correct Answer 30

ব্যাখাঃ ট্রেনটি ১ ঘন্টায় অতিক্রম করে ( ৬৩ - ৩) কি.মি = ৬০ কি.মি = ৬০×১০০০ মিটার আবার, ১ ঘন্টা = ৩৬০০ সেকেন্ড ৬০×১০০০ মিটার অতিক্রম করে ৩৬০০ সেকেন্ড ৫০০ মিটার অতিক্রম করে ( ৩৬০০×৫০০)/ (৬০×১০০০) = ৩০ সেকেন্ড
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