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Start learning 50% faster. Sign in nowRecently, scientists looking for fossil fuels beneath the ground of northeastern France have discovered large reservoir of white hydrogen. White hydrogen is also referred to as “natural,” “gold” or “geologic” hydrogen. It causes no CO2 emissions when used as a fuel
A motor boat goes downstream from point A to B ,which is 36 km away from point A, and then returns to A.If actual speed of the boat in still water is 7...
Speed of a boat in still water is 20 km/h while the speed of stream is ____ km/h. Total time taken by the boat to go 200 km upstream and 300 km downstre...
Speed of boat is 20 km/hr. Speed of the stream is 20% less than speed of boat. Then find time taken by boat to go 72 km downstream?
If the sum of upstream and downstream speed is 32 km/hr and the speed of the current is 6 km/hr. Then find time taken to cover 44 km in downward?
A man rows a certain distance downstream in 5 hours and back to the same point in 8 hours. If the speed of the stream is 4.5 km/hr then what is the spee...
Ricky can go on a motor boat with a speed of 15 km/hour in still water to a certain upstream point and come back to the starting point in a river which ...
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 ...
A boy can swim a certain distance downstream in 6 hours and return in 7 hours. If the rate of stream is 3 kmph then what is the speed of boy in still wa...
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 boy can swim in water with a speed of 13 km/hr in still water. If the speed of the stream is 5 km/hr, what will be the time taken by the boy to cover ...
