Question
Three houses are available in a locality. Three
persons apply for the houses. Each applies for one house without consulting others. The probability that all the three apply for the same house is :Solution
- The ratio of the boat's speed in still water to the speed of the stream is given as 16:4. The boat takes a total time in the ratio 10:7 to travel (d + 120)...
- The time required by a boat to travel (x – 40) km against the stream is equal to the time it takes to go (2x – 80) km with the stream. If the speed of ...
A boat travels downstream at a speed that is (13/12) times its speed in still water. If the boat takes 3 hours to cover 132 km going upstream, how long ...
A boat moves downstream at 45 km/h, which is (25/10) m/s faster than its upstream speed. If it covers (D + 24) km downstream and (D - 36) km upstream in...
A ship covers a distance of 240 km downstream in a time that is 2 hours shorter than the time it takes to cover the same distance upstream. The ship's u...
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 motorboat covers a certain distance downstream in a river in 3 hours. It covers the same distance upstream in 3 and a half an hour. If the speed of th...
A boat can cover 130 km in downstream in 10 hours and 120 km in upstream in 12 hours. Find the distance travelled by the boat in still water in 4 hours.
The ratio of the boat's speed in still water to the speed of the stream is 10:2. The boat takes time in the ratio 11:15 to travel...
A boat goes 52 km in upstream in 4 hours and takes 3 hours to complete a distance of 15 km in downstream. Find the speed of boat in still water.
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