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A four-stroke engine (also known as four-cycle) is an internal combustion engine in which the piston completes four separate strokes—intake, compression, power, and exhaust—during two separate revolutions of the engine's crankshaft, and one single thermodynamic cycle.
The speed of a boat in still water is 25 km/hr. If the boat covers 160 km in upstream in 10 hours, then find the time taken by the boat to travel 204 km...
A boat covers 24km upstream and 36km downstream in 6 hours while it covers 36km upstream and 24km downstream in 13/2 hours. The speed of the current is....
A boat travels 30 km upstream and 40 km downstream. The speed of the stream is 5 km/h, and the boat’s speed in still water is 15 km/h. How much time d...
The duration it takes for boat 'P' to cover 160 km downstream is equal to the duration it takes to cover 120 km upstream. If the ratio of the speed of b...
A boat travels 36 km upstream and 48 km downstream in 8 hours. If the speed of the stream is 3 km/h and the boat’s speed in still water is 9 km/h, wha...
A takes 3 hours more while swimming upstream than downstream. His speed in still water is 12 km/hr. The speed of stream is 4 km/hr. What is the distance?
The ratio of the speed of boat ‘A’ in still water, the speed of boat ‘B’ in still water and the speed of the current is 8:5:2, respectively. If ...
A boat travels 48 km downstream in 4 hours and 24 km upstream in 6 hours. What is the speed of the boat in still water?
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
A boat covers 30 km downstream in 60 minutes. If the ratio of the speed of the boat in still water to that of the speed of the stream is 8:4, respective...
