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Start learning 50% faster. Sign in nowVariability describes how far apart data points lie from each other and the center of a distribution. Along with measures of central tendency, measures of variability give you descriptive statistics that summarize your data.
When travelling downstream, a boat takes 5.25 hours to travel 147 km. If the speed of the stream is (3/7)th of downstream speed of the boat, ...
The respective ratio between the time taken by a boat to travel the same distance downstream in stream A and that in stream B is 7 : 5. The speed of the...
The speed of a boat in still water is 8 km/hr and speed of current is 3 km/hr. If time taken to cover a certain distance upstream is 11 hours, then how ...
A boat makes a journey from point P to point Q and return back in 6 hr 40 min. One way it travels with the stream and on the return it travel against th...
A boat moving downstream covers a distance of 200km in 5 hrs as long as to cover the same distance upstream it takes 10hrs. What will be the time taken ...
A boat, whose speed in still water is 25% more than the speed of the current, covers 810 km downstream in _____ hours. The speed of the boat in still wa...
A man can row his boat with the stream at 42 km/h and against the stream in 7 km/hours. The man’s rate is
Time taken by a boat to cover 180 km in downstream is the same as to cover 140 km in upstream. Find the time taken by the boat to cover 360 km in downst...
The speed of a boat in calm water is 4 km/hr greater than the speed of the stream. The boat travels a distance of 280 km downstream and 200 km upstream ...
A boat travels faster than the stream by 28 km/h. It covers a distance of 112 km upstream and returns 132 km downstream, all within 7 hours. Calculate t...
