Top 10 Most Important Boat & Stream Aptitude Problems.

Reference : Boat & Stream

Q1. A boat travels 36 km upstream in 4 hours and 54 km downstream in 3 hours. What is the speed of the boat in still water?
24 km/hr
18 km/hr
21 km/hr
15 km/hr

Q2. A boat travels 80 km downstream in 5 hours. If the stream speed increases by 2 km/hr, it would take 4 hours to cover the same distance. Find the boat's speed in still water.
22 km/hr
18 km/hr
20 km/hr
16 km/hr

Q3. A boat covers a triangular river course of 3 sides: First side: 24 km downstream in 3 hours Second side: 18 km upstream in 3 hours Third side: 20 km across stream in 4 hours Calculate the boat's speed in still water.
16 km/hr
12 km/hr
14 km/hr
10 km/hr

Q4. A boat takes 3 hours to go 30 km downstream and 4 hours to return upstream. If fuel consumption reduces boat's effective speed by 2 km/hr, what is the stream's speed?
5 km/hr
3 km/hr
4 km/hr
2 km/hr

Q5. A boat travels in a circular river with circumference 120 km. If downstream speed is 20 km/hr and upstream speed is 15 km/hr, how long will it take to complete one full circle?
7 hours
5 hours
6 hours
4 hours

Q6. A boat travels 45 km downstream in 3 hours and 60 km upstream in 5 hours. The stream's speed varies by 1 km/hr at different points.
21 km/hr
15 km/hr
18 km/hr
12 km/hr

Q7. A boat's efficiency reduces by 20% due to water resistance. If it originally travels 36 km downstream in 3 hours, how long will it now take?
4.25 hours
3.75 hours
4 hours
3.5 hours

Q8. A boat covers 40 km downstream in 2 hours, 30 km upstream in 3 hours, and 50 km across stream in 5 hours. Calculate total river width.
25 km
15 km
20 km
10 km

Q9. If a boat's downstream speed is 4/3 times its upstream speed, and it takes 12 hours for a round trip of 180 km, find upstream speed.
18 km/hr
12 km/hr
15 km/hr
10 km/hr

Q10. Two streams flow at 2 km/hr and 3 km/hr. A boat travels between their confluence, covering 60 km in 4 hours. What's the boat's still water speed?
22 km/hr
18 km/hr
20 km/hr
16 km/hr

*Other References : *

AP & GP : Link
Area : Link
Average : Link
Compound Interest : Link
Height & Distance : Link
LCM & HCF : Link
Logarithm : Link
Percentage : Link
Profit & Loss : Link
Ratio & Proportion : Link
Simple Interest : Link
Speed Distance : Link
Time & Work : Link
Trains Problem : Link