If a man's rate with the current is 12 km/hr and the rate of the current is 1.5

CuriousTab

CuriousTab

Home Aptitude

Discussion

Home ‣ Aptitude ‣ Boats and Streams Comments

Question
If a man's rate with the current is 12 km/hr and the rate of the current is 1.5 km/hr then man's rate against the current is?
Options
A. 9 km/hr
B. 6.75 km/hr
C. 5.25 km/hr
D. 7.5 km/hr

Correct Answer

9 km/hr

Explanation

Let the rate against the current be x km/hr.
Then, (12 - x) / 2 = 1.5
? 12 - x = 3
? x = 9 km/hr

Boats and Streams problems

Search Results

1.
A boat goes 40 km. upstream in 8 hours and 36 km. downstream in 6 hours. The speed of the boat in standing water is?
Options
A. 6.5 km.hr
B. 6 km/hr
C. 5.5 km/hr
D. 5 km/hr

2.
The speed of a boat in still water is 10 km/h. If it can travel 26 km downstream and 14 km upstream in the same time , then the speed of stream is?
Options
A. 2 km/h
B. 2.5 km/h
C. 3 km/h
D. None of these

3.
The speed of boat upstream and speed of boat downstream are 7 km/h and 13 km/h, respectively. Then the speed of stream and the speed of boat in still water is?
Options
A. 10 km/h and 3 km/h
B. 15 km/h and 9 km/h
C. 20 km/h and 6 km/h
D. 40 km/h and 12 km/h

4.
Mr Jaspal purchased a cow for Rs. 3,000 and sold it to Mr Dharampal, on the same day, for Rs. 3,600, allowing Dharampal a credit of 2 years. If the rate of interest be 10% per annum, then the Jaspal has a gain of:
Options
A. Nil
B. 5%
C. 750
D. 10%

5.
The profit earned by Mrs Malhotra in selling an article for Rs. 900 is double the loss incurred by her when the same article is sold for Rs. 490. At what price (Rs.) should the article be sold to make 25% profit?
Options
A. 715
B. 469
C. 400
D. 750

6.
If a man rows at 5 km/hr in still water and 3.5 km/hr against the current his rate along the current is?
Options
A. 8.5 km/hr
B. 6.5 km/hr
C. 6 km/hr
D. 4.25 km/hr

7.
The speed of a boat downstream is 15 km/hr and the speed of the stream is 1.5 km/hr. The speed of the boat upstream is?
Options
A. 13.5 km/hr
B. 16.5 km/hr
C. 12 km/hr
D. 8.25 km/hr

8.
The speed of a boat in still water is 2km/hr. If its speed upstream be 1 km/hr, then speed of the stream is?
Options
A. 1.5 km/hr
B. 3 km/hr
C. 1 km/hr
D. None of these

9.
A man can row downstream at 14 km/hr and upstream at 9km/hr. Man's rate in still water is?
Options
A. 5 km/hr
B. 23 km/hr
C. 11.5 km/hr
D. None of these of these

10.
A man can row with the stream at 11 km/hr and against the stream at 8 km/hr. The speed of the stream is?
Options
A. 3 km/hr
B. 9.5 km/hr
C. 1.5 km/hr
D. 6 km/hr

Comments

More in Aptitude: