Boats and Streams Problems

A boat travels from Mumbai to Gujarat at a speed of $30 km/hr$ in still water and returns to Mumbai. Also, the speed of the water/stream is $10 km/hr$. Find the average speed of the total journey?

Suresh Swims $25 meter$ with upstream and $39 meter$ with the flow of water in $8 min$. Also Ramesh swims $35 meter$ with upstream & $52 meter$ with flow of water in $11 min$ in the same swimming pool. Find the speed of water n swimming pool?(Assume Suresh & Ramesh have same capacity)

A boat of length $500 \mathrm{m}$ when going downwards passes a part in $50$ seconds and while returing it again passes that prat in $100$ seconds. Find the length$\left(\mathrm{n}\right)$ of the part if speed of sea is $10 \mathrm{m}/\mathrm{s}$

Titanics travels at speed of $15 km/hr$. It start from London to france which is $100 km$ apart. In the direction of flow of sea it takes $5$ hours from london to France, how long it will take from france back to london? (in minute)

Sheetal can swim in still water at $7 \mathrm{m}/\mathrm{s}$ and the river itself running at $2 \mathrm{m}/\mathrm{s}$. She takes $64$ seconds to swim front & back, calculate distance.

A jetty takes $40 min$ less to travel $60 \left(m\right)$ downstream than to upstream. If speed of jetty is $10m/min$. Find speed of stream?

From a point A the boat takes $2 hours 30 min$ to cover $20 km$ downstream of river to point B. $2 hours$ to cover $10 km$ upstream. Find the speed of stream $(km/hr)$.

Mohim is a fisherman who catches fish on the stream that flows downhill near his village. he estimates that it takes him $6\mathrm{hours}$ to cover on an average $40\mathrm{km}$ against the stream going uphill and $64\mathrm{km}$ along the stream downhill and it takes him close to $11\mathrm{hours}$ if he covers $80\mathrm{km}$uphill and $96\mathrm{km}$ downhill. What is the speed with which the stream is flowing downhill?

Ram Sumit move towards each other from Belapur to Alibug which are $259\mathrm{km}$ apart, on a stream. The water flows from Belapur to Alibaug and then meets the sea while flowing with a speed of $4\mathrm{km}/\mathrm{hr}$ on average. Ram's ferry has an average speed which is $10\mathrm{km}/\mathrm{hr}$ less than of Sumit, in still water. They meet each other at a point distant $133\mathrm{km}$ from Alibaug, after starting at the same time from Belapur and Alibaug respectively. What is the time taken by both the boats to meet each other?

Ravi and Ram are participating in a speed boat competition. Ravi starts with a speed of $12\mathrm{km}/\mathrm{hr}$ from the starting point. Ram's boat develops a snag and thus he gets delayed by $12 \mathrm{minutes}$. Both Ravi and Ram are going upstream on a river following downhill. The speed of the stream is estimated to be $2\mathrm{km}/\mathrm{hr}$. Ram is ultimately able to cross ravi after $6\mathrm{km}$ and thereby wins the competition. How fast was Ram's boat as compared to Ravi's boat?

Ashraf ferries people upstream to a tourist destination and back. The tourist destination is $60\mathrm{km}$ away from the base and comes back and it takes close to $35\mathrm{hours}$ for the onward and returns journey, to take the next to a lot of tourists. If the average weight of the boat remains the same every time, it takes Ashraf the same time to cover $3\mathrm{km}$ downstream as $4\mathrm{km}$ upstream. What is the approximate speed of Ashraf's boat in still water?

An army convoy needs to carry out a secret mission at the dead of the night while going on a speedboat on a stream going up the hill. They do a dry run and find that it takes roughly $\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$3$}\right.$rd the time while coming down the stream as compared to while going up the stream. They also find the speed of the boat decreases by close to $40\%$ and thus it would take them nearly $2\mathrm{hours}$ more for the $30\mathrm{km}$ distance they need to cover upstream. While coming down, they find that there is a place where they can hide in case they come under enemy fire. The place would take roughly $5\mathrm{hours}$ for them to reach form the top of the stream. How far is this place from the top of the stream?

Amit and vishal experiment on a small stream of the river mandakini in Rishikesh. Amit decided to go upstream while Vishal decides to go downstream start in from the midpoint of the stream , starting at the same instant of time. After $3$ hours of rowing, Amit eaches the top of the stream and then he decides to meet vishal who had gone downstream. After how much time after Vishal has reached the bottom of the stream, d both of them meet each other if the ratio of speed of Amit and Vishal's boats in still water is $3:2 ?$

In a certain race where Ravi participates, he finds that the speed of the water on the stream is $4\mathrm{km}/\mathrm{hr}$. While coming downstream, the engine of his speed boat runs out while he had covered only half the distance downstream. He calculates the time he took while going upstream from the base camp and while coming down to half of the path and finds that the ratio of the time taken comes out to be approximately. $18:5$. Based on these estimates, what would be the distance covered in $9 \mathrm{hours}$ while going upstream.

In a certain, the distance covered by each boat is $432\mathrm{km}$. Hari estimates that the ratio of the speed of his powerboat to the speed of flowing water in the stream is approximately $7:2$, with the speed of his boat being more than that of the stream. In a dry run, he finds that it takes him $6$ hours to go downstream then what can be said about the relative difference in speed of his powerboat and that of the stream?

A boatman rows his boat upstream from point $\mathrm{A}$ to point $\mathrm{B}$ and downstream from point $\mathrm{C}$ to point $\mathrm{D}$ in $6 \mathrm{hours}$. What is the velocity of the boat in still water if the distance between point $\mathrm{C}$ to point $\mathrm{D}$ is $8 \mathrm{km}$ and the speed of the stream is $2 \mathrm{km}/\mathrm{hr}$?

Palash rides his motorbike $28 \mathrm{km}$ in $4 \mathrm{hours}$ against the flow of the nearby river and rides next $7 \mathrm{km}$ in $30 \mathrm{minutes}$ along with the flow of the river. How much time will Palash take to ride $50 \mathrm{km}$ in the still water?

On an adventurous trip, Rakesh rows a boat in still water at $15 \mathrm{m}/\mathrm{s}$. The speed of the stream is $10 \mathrm{m}/\mathrm{s}$. If Rakesh rows the boat on the upstream side and then again on the downstream side, then what is the ratio of time taken by Rakesh to cover a particular length in each direction?

It takes $8 \mathrm{hours}$ for a boat to move downstream from two points named $\mathrm{X}$ and $\mathrm{Y}$ and to return to point $\mathrm{X}$ upstream. What will be the distance between these two points if the speed of the boat in still water is $8 \mathrm{km}/\mathrm{hr}$ and the speed of the stream is $6 \mathrm{km}/\mathrm{hr}$?

While rowing at a speed of $15 \mathrm{km}/\mathrm{hr}$ in still water, Rohit finds that when he covers a certain distance in the stream, he takes thrice as much time to row upstream than to row downstream. What is the speed of the stream?