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Let speed of smaller train be ‘x’ m/sec. Speed of longer train (m/sec) = 90 × (5/18) = 25 m/sec => (260 + 120) = (x + 25) × 5 => x + 25 = 76 => x = 51 m/sec Required time = (120 + 339)/51 = 9 sec
A boat moving upstream takes 8 hours 48 minutes to cover a distance while it takes 4 hours to return to the starting point, downstream. What is the rati...
The difference between the downstream speed and the upstream speed of a boat is 6km/hr and the boat travels 72km from C to D (downstream) in 4 hours. Th...
A boat can cover 195 km in downstream in 10 hours and 140 km in upstream in 14 hours. Find the distance travelled by the boat in still water in 4 hours.
The speed of a motorboat in still water is 50 km/hr. If the motorboat travels 120 km along the stream in 1 hour 30 minutes, then the time taken by it t...
A boat running downstream covers a distance of 42 km in 6 hrs and covering the same distance upstream in 14 hrs. What is the speed of a boat in still wa...
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?
A boat, whose speed in still water is 25% more than the speed of the current, covers 810 km downstream in _____ hours. The speed of the boat in still w...
A man can go on a motor boat with a speed of 25 km/hour in still water to a certain upstream point and come back to the starting point in a river which ...
A man can row at 4 kmph in still water. If the velocity of current is 2 kmph and it takes him 5 hour to row to a place and come back, how far is the place?
If the sum of upstream and downstream speed is 26 km/hr and the speed of the current is 5 km/hr. Then find time taken to cover 72 km in downward?
