প্রশ্ন ও উত্তর
A certain river has a current of 3 miles per hour. A boat takes twice as long to travel upstream between two points as it does to travel downstream between the same two points. What is the speed of the boat in still water?
গণিত Boat and Stream 08 Oct, 2020
প্রশ্ন A certain river has a current of 3 miles per hour. A boat takes twice as long to travel upstream between two points as it does to travel downstream between the same two points. What is the speed of the boat in still water?
সঠিক উত্তর
9 miles per hour
মন্তব্য
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