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Oxygen is by far the most abundant element in the Earth's crust, making up 46% of mass—coming up just short of half of the total
A man can go on a motor boat with a speed of 15 km/hour in still water to a certain upstream point and come back to the starting point in a river which ...
A boat travels 240 km upstream in 6 hours and 360 km downstream in 6 hours. How long will it take to travel 300 km in still water?
A boat travels downstream at a speed of 25 km/h and the stream's current adds an additional 3 km/h to its speed. How long will it take for the boat to t...
Find the total distance covered by boat in each upstream and downstream in 5 hours if the speed of boat in still water and speed of current is 25 km/h a...
Speed of a boat in still water is 18 km/h while the speed of stream is ____ km/h. Total time taken by the boat to go 90 km upstream and 210 km downstrea...
The circumference of the two circles is 110 cm and 330 cm respectively. What is the difference between their radii?
A motorboat in still water travels at a speed of 40 km/hr. It goes 45 km upstream in 2 hour 15 minutes. The time taken by it to cover the same distance ...
Find the total distance covered by boat in each upstream and downstream in 8 hours if the speed of boat in still water and speed of current is 26 km/h a...
The speed of boat downstream and upstream is 28 km/hr and 18 km/hr respectively. Time taken to travel a distance of (m + 35) km downstream and (n + 22) ...
The speed of a boat in still water is 6 km/hr more than that of the current. The time taken by the boat to cover 875 km downstream is 17.5 hours. Find t...
