Q.1
A person can run a boat in still water with speed of 5 km./hours. If it takes 1 hours to go and returns one place to another by the boat. while the speed of current is 1 km./hours, so how would be far from that place ?

Q.2
A swimmer can swim in still water with speed of 10 km./hours. It takes triple time to cover a certain distance against the stream than in direction of stream. Calculate the velocity of the stream ?

Q.3
One sailor goes 36 km in 4 hours in the direction of river flow and returns again in 6 hours. Find the speed of river ?

Q.4
A person swims in stilll water with speed of 5 km./hours. If the speed of stream is 1 km. /hour, then it takes 100 minute to cover certain distance. Mention what is the distance to the location ?

Q.5
To covers distance from A to B on a boat to go with the stream and distance from Q to P against the stream it takes 4 hours. If the speed of stream is 2 km./hour and speed of boat is 4 km/hour in still  water, then what is the distance between P and Q ?

Q.6
A swimmer’s speed in still water is $9\frac{1}{3}$ km./hours. If it takes triple time to go in the direction of stream than against the stream, then what is the speed of stream ?

Q.7
In a river distance between A and B is 45 km. and the speed of the river is 2 km./ hour. In a calm water speed of a sailor is 7 km./hour. If the sailor goes from A to B and come back, then how much time it will take to cover distance ?

Q.8
A boat covers 18 km distance from A to B in upstream in $4\frac{1}{2}$ hours.if the speed of boat in still water is $6\frac{1}{2}$ km./hour, then what is the speed of stream ?

Q.9
A swimmer can swim distance from A to B in the opposite direction of stream in 8 hours and again from B to A in 6 hours. If the speed of stream is 2 km./hour, then what is the speed of swimmer in still water ?

Q.10
A boat can float in still water with speed of 16 km./hour. If it takes 4 hours to go from P to Q in a river and 6 hour to come back, then what is the speed of stream ?

Q.11
A boat covers a distance from A to B and from B to A in 3 hours. If the speed of boat in still water is 9 km./hour and speed of stream is 3 km/hour, then what is the distance from A to B ?

Q.12
Koshal can swim a distance in a river from A to B in 5 hours, while takes 6 hours to come back from B to A. If the speed of stream is 2 km./hour, then what is the speed of koshal in still water ?

Q.13
A person takes $11\frac{1}{4}$ minute to rowing the boat in  three-quarters of one kilometer and $7\frac{1}{2}$ minute to come back. What is the speed of person in still water ?

Q.14
A person covers 21 km in the opposite side of the stream and 35 km in the direction of the stream. In every case it takes 7 hours. What is the velocity of the stream?

Q.15
A boat covers 30 km distance in the direction of the stream in $2\frac{1}{2}$ hours, while it takes $3\frac{3}{4}$ hours in the opposite side of stream to cover this distance. What is the velocity of the stream ?

Q.16
A boat floats in still water with the speed of 8 km./hour. it covers 48 km distance in the direction of stream in 4 hours. What is the velocity of the stream ?

Q.17
A swimmer swims $\frac{3}{4}$ km distance in $11\frac{1}{4}$ minutes in the opposite direction of steam and come back at the starting point in $7\frac{1}{2}$ minutes. What is the speed of swimmer in still water ?

Q.18
The velocity of a boat in still water is 5 km./hour. If the velocity of stream is 1 km./hour then a sailor takes 75 minutes to go and come back from a location to starting point. How far is the location of the starting point ?

Q.19
A steamer covers a distance between to ports within 4 hours in the direction of the stream and 5 hours in the opposite side of stream. If the velocity of stream is 2 km./hour, then what is the speed of steamer in stilll water ?

Q.20
A boat travel a distance in the opposite direction of the stream within 8 hours 48 minutes and 4 hours in the direction of the stream. What is the speed of boat in still water and ratio of stream’s Velocity ?

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