Question
Which gas is most abundant in the Earth's
atmosphere.Solution
Nitrogen makes up about 78% of the Earth's atmosphere.
A man swims 2km/h against the stream and goes 1 km in 10 minutes along the stream, how much time will it take to cover 5 km in still water?
A motorboat in still water travels at a speed of 25 km/hr. It goes 35 km upstream in 1 hours 45 minutes. The time taken by it to cover the same distance...
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 925 km downstream is 18.5 hours. Find t...
A boat takes 7 hours to cover 245 km upstream and 9 hours to cover 477 km downstream. Find the time taken by the boat to cover 410 km upstream and 495 k...
Speed of a boat in still water is 5 times more than the speed of stream. If boat covers 147 km in downstream in 7 hours, then find the time taken by the...
The speed of the boat in still water is 6 km/hr and the speed of the stream is 3 km/hr. A boat goes 54 km downstream with its usual speed but at the tim...
The speed of current is 22 km/hr. If the speed of the boat in still water had been 25 km/hr more than the original speed then it would take 5.5 hours to...
A boat, whose speed in still water is 25% more than the speed of the current, covers 315 km downstream in _____ hours. The speed of the boat in still w...
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.
The speed of the stream is 10 km/h. Boat ‘A’ covers 88 km distance against the stream in 11 hours and boat ‘B’ covers 106 km distance against th...
Relevant for Exams:
