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Formula used: (xa)b = xab If xa = xb then a = b Calculation: √3n = 729 ⇒ √3n = (32)3 ⇒ (3n)1/2 = (32)3 ⇒ (3n)1/2 = 36 ⇒ n/2 = 6 ∴ n = 12
Speed of a boat in still water is 15 km/h while the speed of stream is ____ km/h. Total time taken by the boat to go 150 km upstream and 225 km downstre...
A boy can swim in water with a speed of 15 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 ...
A man takes 2.2 times as long to row a distance upstream as to row the same distance downstream. If he can row 66 km downstream in 2 hours, what is the ...
A swimmer swims from a point A against a current for 5 minutes and then swims current for next 5 minutes and comes to the point B. If AB is 100meters, t...
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...
A boat travels 315 km downstream in 7 hours and 135 km upstream in 9 hours. Determine the total time the boat takes to cover 150 ...
Speed of a boat in still water is three times the speed of the boat in upstream. If the boat takes 48 minutes to cover 24 km in downstream, then find th...
A captain can navigate a ship at a speed of 5 km/hr in calm waters. With a current moving at a speed of 3 km/hr, he takes 12 hours longer to travel 'd' ...
Speed of a boat in still water is 48 km/h and the speed of stream is 25% of the speed of boat in still water. If the time taken by boat to cover a dista...
The speed of current is 30 km/hr. If the speed of the boat in still water had been 13 km/hr more than the original speed then it would take 7.5 hours to...
