Boats And Streams(Quantitative Aptitude ) Questions and Answers
Question 1.
A man row downstream 32 km and 14 km upstream. If he takes 6 hours to cover each distance, then find the velocity (in kmph) of the current .
1
\(1\frac{1}{2}\)
2
\(2\frac{1}{2}\)
Explanation:-
Answer: Option B. -> \(1\frac{1}{2}\)
Question 2.
A boat running downstream covers a distance of 16 km in 2 hours while for covering the same distance upstream, it takes 4 hours. What is the speed of the boat in steel water ?
4 km/hr
6 km/hr
8 km/hr
10 km/hr
Explanation:-
Answer: Option B. -> 6 km/hr
Question 3.
A boat man goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes .How long will it take to go 5 km in stationary water ?
1 hr
1 hr 15 min
1 hr 30 min
1 hr 45 min
Explanation:-
Answer: Option B. -> 1 hr 15 min
Question 4.
A boat running upstream takes 8 hours 48 minutes to cover a certain distance, while it takes 4 hours to cover the same distance running downstream . What is the ratio between the speed of the boat and speed of the water current
2 : 1
3 ; 2
6: 3
8 : 3
Explanation:-
Answer: Option D. -> 8 : 3
Question 5.
A man’s speed with the current is 15 km / hr and the speed of the current is 2.5 km / hr. Find the man’s speed against the current ?
9 km/hr
10 km/hr
11 km/hr
12 km/hr
Explanation:-
Answer: Option B. -> 10 km/hr
Question 6.
A boat can travel with a speed of 13 km / hr in still water . If the speed of the stream is 4 km / hr, find the time taken by the boat to go 68 km downstream .
3 hr
4 km
5 hr
6 hr
Explanation:-
Answer: Option B. -> 4 km
Question 7.
A boat can travel with a speed of 13 km / hr in still water . If the speed of the stream is 4 km / hr, find the time taken by the boat to go 68 km downstream .
3 hr
4 km
5 hr
6 hr
Explanation:-
Answer: Option B. -> 4 km
Question 8.
A man can row at 5 kmph in still water. If the velocity of current is 1 kmph and it take him 1 hour to row a place and come back , how far is the place ?
2 km
2.2 km
2.4 km
2.6 km
Explanation:-
Answer: Option C. -> 2.4 km
Question 9.
A boat covers a certain distance downstream in 1 hour, while it comes back in \(1\frac{1}{2}\) hours. If the speed of the stream be 3 kmph , what is the speed of the boat in steel water ?
12 km/hr
15 km/hr
18 km/hr
none of these
Explanation:-
Answer: Option B. -> 15 km/hr
Question 10.
A motorboat , whose speed is 15 km / hr in still water goes 30 km downstream and come back in a total of 4 hours 30 minutes . Find the speed of stream ( in km).