Question
Answer these questions based on the following
information. There are 4 red balls, 4 green balls and 6 blue balls, in a box If one ball is drawn randomly, what is the probability that it is either red or blue?Solution
The correct answer is D
A man can row upstream at 18 km/hr and downstream at 24 km/hr. Find the man’s rate in still water and the rate of the current.   Â
...Speed of current is equal to 25% of speed of boat in still water. If the boat takes 14 hours to cover 140 km in still water, then find the time taken by...
A boat can cover 190 km in downstream in 19 hours and 125 km in upstream in 25 hours. Find the speed of boat in still water.
A ship covers 96 km upstream and 144 km downstream in 8 hours and 6 hours, respectively. Find the time taken by the same ship to cover 180 km in still w...
A boat moving downstream covers a distance of 200km in 5 hrs as long as to cover the same distance upstream it takes 10hrs. What will be the time taken ...
A man swims downstream 60 km and upstream 36 km, taking 12 hr each time. Find the man’s rate in still water?  Â
A boat can cover 200 km in upstream in 10 hours and 220 km in downstream in 4 hours. Find the speed of the stream.
A man rows a boat a certain distance downstream in 9 hours, while it takes 18 hours to row the same distance upstream. How many hours will it take him t...
The speed of the boat in still water is 6 km/hr and the speed of the stream is 3 km/hr. A boat goes 54 km downstream with its usual speed but at the tim...
- A boat covers (x – 20) km upstream in the same time it covers (2x – 95) km downstream. If the speed of the boat and stream are 15 km/h and 3 km/h respe...
