Boats and Streams

Find the speed (in km/hr) of the boat in still water. If a boat goes $12$$km$ downstream and comes back to the starting point in$3$ Hours. If the speed of the current is$3$$km/hr$.

In a stream running at $2 \mathrm{km}/\mathrm{hr}$ a boat goes $6 \mathrm{km}$ up-stream and back again to be the starting point after $33 \min$. Find the speed of the boat in still water?

A boat goes down stream at$x \raisebox{1ex}{$\mathrm{km}$}\!\left/ \!\raisebox{-1ex}{$\mathrm{hr}$}\right.$ and upstream at $y \raisebox{1ex}{$\mathrm{km}$}\!\left/ \!\raisebox{-1ex}{$\mathrm{hr}$}\right.$. The speed of the boat in still water is _____.

A boat has to travel upstream $20 \mathrm{km}$ distance from point X of a river to point Y. The total time taken by the boat in travelling from point X to Y and Y to X is $4$ minutes and $40$ seconds. What is the speed of the boat?

A boat covers $12 \mathrm{km}$ upstream and$18 \mathrm{km}$downstream in $3 \mathrm{hrs}$, while it covers$36 \mathrm{km}$upstream and $24 \mathrm{km}$downstream in $6\frac{1}{2} \mathrm{hours}$. What is the speed of the current?

A boat takes $150 \min$ less to travel $40 km$ downstream than to travel the same distance upstream. The speed of the stream is $4 km/hr$. What is the downstream speed?

A boat cover $12 \mathrm{km}$ upstream and $18 \mathrm{km}$ downstream in $3$ hours, while it covers $36 \mathrm{km}$ upstream and $24 \mathrm{km}$ downstream in $6.5$hours. What is the speed of boat?

A person can row a distance of $2 \mathrm{km}$ upstream in $15 \min$ and downstream in $6 \min$. What is the speed of the stream ?

Ram rows a boat against a stream flowing at $2 \mathrm{km}/\mathrm{h}$ for a distance of $12 \mathrm{km}$ and then turns around and rows back with the current. If the whole trip lasts $8$hours, find Ram's rowing speed in still water.

In one hour, a boat goes$12 \mathrm{km}$ along the stream and $8 km$ against the stream. The speed of the boat in still water.

A boat running downstream covers a distance of $30 \mathrm{km}$ in $6 \mathrm{hrs}$ and for covering the same distance upstream it takes $10 \mathrm{hrs}$. What is the speed of the stream?

A boat covers a certain distance downstream in $1 \mathrm{hour}$, while it comes back in $2\frac{1}{2} \mathrm{hours}$. If the speed of the stream be $4 \mathrm{km}/\mathrm{hr}$, what is the speed of the boat in still water?

If speed of the boat in still water is $25 \mathrm{km}/\mathrm{hr}$ and speed of the stream is $21 \mathrm{km}/\mathrm{hr}$ then find the speed of the speed of the boat downstream.

A boat running downstream covers a distance of $40 \mathrm{km}$ in $5 \mathrm{hrs}$ and for covering the same distance upstream it takes $10 \mathrm{hrs}$. What is the speed of the stream?

A boat covers a certain distance downstream in $2 \mathrm{hour}$, while it comes back in $2\frac{1}{2} \mathrm{hours}$. If the speed of the stream be $5 \mathrm{km}/\mathrm{hr}$, what is the speed of the boat in still water?

If speed of the boat in still water is $20 \mathrm{km}/\mathrm{hr}$ and speed of the stream is $16 \mathrm{km}/\mathrm{hr}$ then find the speed of the speed of the boat downstream.

A man's speed with the current is $10 \mathrm{km}/\mathrm{hr}$ and the speed of the current is $2.5 \mathrm{km}/\mathrm{hr}$. The man's speed against the current is:

A motorboat can travel at $10 \mathrm{km}/\mathrm{hr}$ in still water. It travelled $120 \mathrm{km}$ downstream in a river and then returned, taking altogether $100$ hours. Find the rate of flow of the river.

How long will it take to row $10 \mathrm{km}$ upstream if one can row $20 \mathrm{km}$ in $10$ minutes in still water and the same distance in $8$ minutes with the stream?

A man's speed with the current is $15 \mathrm{km}/\mathrm{hr}$ and the speed of the current is $2.5 \mathrm{km}/\mathrm{hr}$. The man's speed against the current is: