Question
Earthquakes occur most frequently at which part of
earth?Solution
No part of Earth's surface is free from earthquakes, but some regions experience them more frequently. They are most common at tectonic plate boundaries where different plates meet.
The speed of the boat in still water is 9 km/hr and the speed of the stream is 6 km/hr. A boat goes 90 km downstream with its usual speed but at the tim...
The speed of a boat in still water is three times the speed of the boat upstream. If the boat takes 30 minutes to cover 27 km downstream, then find the ...
A boat can cover 132 km in downstream in 11 hours and 170 km in upstream in 17 hours. Find the speed of boat in still water
A Swimmer Walks 45km along the river's flow in 3 hours 45 minutes and walks 15km against the flow in 2 hours 30min. Find the speed of the boat in Still ...
Determine the speed of a Ship in calm water, given that the Ship's speed downstream is 20% greater than its speed in still water. If the Ship can cover ...
Covering 54 km upstream and 150 km downstream takes a boat 8 hours in total. The boat’s still-water speed is 18 km/h more than the stream. What is the...
Motor boat covers a certain distance downstream in a river in 20 hours. It covers the same distance upstream in 30 hours. If the speed of the water is ...
The speed of a boat is that of the current of water is 30:7. The boat goes along with the current in 4 hours 12 minutes. It will come back in
The ratio of the speed of a launch in still water to the speed of the stream is 8 : 1. If the speed of the launch is increased by 25%, it takes 5 hours...
A, B and C started a business by investing in the ratio 1/5 : 1/4 : 2/6. After 6 months C withdrew 1/4 of his investment. If after 1 year from start of ...
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