Question
One - Fourth of a certain journey is
covered at the rate of 25km/h, one- third at the rate of 30 km/h and rest at 50 km/h. Find the average speed for the whole journey.Solution
A boat can cover 72 km in still water and 60 km in downstream in 4 hours and 3 hours respectively. Find the time taken by the boat to cover 60 km upstre...
A boat can cover 187 km in downstream in 11 hours and 180 km in upstream in 18 hours. Find the speed of boat in still water
A man can row his boat with the stream at 14 km/h and against the stream in 8 km/hours. Find the rate of the stream.
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 ...
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 boat takes the same amount of time to travel (x – 24) km upstream as it takes to cover (2x – 84) km downstream. If the speed of the boat is 12 km/h a...
A boat, whose speed in still water is 25% more than the speed of the current, covers 315 km downstream in _____ hours. The speed of the boat in still w...
If a man rows at the rate of 17 kmph in still water and his rate against the current is 7 kmph, then find the man’s speed with downstream....
The speed of a boat in still water is 12 times the speed of the stream. If the difference between the upstream and downstream speed of the boats is 20 k...
The water in a river flow at the rate of 4 km per hour if the width and depth of the river are 8 M and 4 m respectively then how much water will enter ...
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