Question
What did a recent study led by Dr. Babula Jena and
colleagues from the National Centre for Polar and Ocean Research, in collaboration with the British Antarctic Survey, report?Solution
The study reported unprecedented hindrance in Antarctic ice expansion and ice retreat ahead of the annual ice maximum in 2023.
Boat ‘A’ can cover 120 km in still water in 12 hours. In still water, if the ratio of the speed of boat ‘A’ to that of ‘B’ is 5:4 and the sp...
A boat goes 65 km in upstream in 5 hours and takes 4 hours to complete a distance of 20 km in downstream. Find the speed of boat in still water.
A boat takes 15 hours to go downstream from point 'I' to point 'J' and 25 hours to return upstream. The distance between 'I' and 'J' is 150 km. How long...
A boat takes 15 hours to travel 150 km upstream. When its speed is doubled, it covers 150 km downstream in 3 hours. Find the speed of the stream.
When a speed of stream is 25% of the speed of boat in still water. If the boat can travel 60 km upstream in 5 hours and 80 km downstream in 4 hours, the...
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 boat can cover 180 km in downstream in 18 hours and 125 km in upstream in 5 hours. Find the distance travelled by the boat in still water in 10 hours.
A boat can cover 185 km in downstream in 5 hours and 120 km in upstream in 12 hours. Find the speed of boat in still water.
A boat sails 150 km in downstream direction in 5 hours. If the upstream speed is one-third of its downstream speed, calculate the time it will take to c...
Speed of a boat in still water to speed of boat in upstream is 8: 7. If the boat can travel 450 km in downstream in 10 hours, then find the time taken b...
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