Question
Select the Venn diagram that best represents the
relationship between the following classes: Oxygen, Hydrogen and Gases.Solution
The correct answer is C
A boat takes 7 hours to cover 259 km upstream and 9 hours to cover 477 km downstream. Find the time taken by the boat to cover 645 km upstream and 660 k...
A swimmer can swim at a speed of 3.5 kilometers per hour in still water. If the time taken to cover a certain distance upstream is 2.5 times the time ta...
The speed of a boat in still water is 8 km/hr and speed of current is 4 km/hr. If time taken to cover a certain distance upstream is 12 hours, then how ...
A boat can cover 188 km in downstream in 4 hours and 140 km in upstream in 7 hours. Find the speed of boat in still water.
A boat can cover 170 km in downstream in 5 hours and 100 km in upstream in 10 hours. Find the speed of boat in still water.
If the speed of the current is 4 km/hr and the ratio of the speed of the boat in downstream to the speed of the stream is 7:2, what is the distance trav...
The ratio of the speed of boat ‘A’ in still water, the speed of boat ‘B’ in still water and the speed of the current is 11:5:2, respectively. If...
The speed of a boat in still water is 32km/hr and the speed of the current is 8km/hr. It takes a total of 15hours to row to upstream from Point A to B a...
The total time taken by a boat to cover a certain distance in downstream and the same distance in upstream is 10 hours. The same boat can cove...
 A man can row the boat x km downstream and the same distance upstream in 12 hours. Also, he can row the boat 5x km downstream in 10 hours. At what tim...
