Question
What is the smallest perfect square that is divisible
by each of 42, 48 and 60?Solution
The correct answer is A
- A boat takes 9 hours more to cover 270 km upstream than to travel 180 km downstream. If the speed of the boat is ‘4x’ km/hr and the speed of the stream...
 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...
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...
A boat has a speed of 12 km/h in still water and the speed of the stream is 3 km/h. It first covers 45 km in downstream and then travels upstream a dis...
Ratio of speed of boat in downstream and speed of stream is 7:3, if speed of current is 9 km/hr, then find distance travelled (in km) upstream in 6 hours.
A boy can swim a certain distance downstream in 4 hours and return in 7 hours. If the rate of stream is 6 kmph then what is the speed of boy in still wa...
A man can row his boat with the stream at 14 km/h and against the stream in 8 km/hours. Find the rate of the stream.
If a man rows at the rate of 25 kmph in still water and his rate against the current is 5.5 kmph, then the manrsquo;s rate along the current is:...
A kayaker covers 64 km upstream and 96 km downstream in 8 hours and 6 hours, respectively. Find the time taken by the same kayaker to cover 140 km in st...
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...
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