প্রশ্ন ও উত্তর
A man can cross 10 miles distance of a river in favor of the stream in 2 hours. He can come back against the stream along the same way in 5 hours. What is the average speed, in miles per hour, for the entire trip?
গণিত Boat and Stream 07 Oct, 2020
প্রশ্ন A man can cross 10 miles distance of a river in favor of the stream in 2 hours. He can come back against the stream along the same way in 5 hours. What is the average speed, in miles per hour, for the entire trip?
সঠিক উত্তর
20/7
মন্তব্য
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