SATHEE: Quantitative Aptitude Ques 641

Quantitative Aptitude Ques 641

Question: A man can row at 5 km/h in still water. If the velocity of current is 1 km/h and it takes him 1 h to row to a place and come back, how far is the place?

Options:

A) 2.5 km

B) 3 km

C) 2.4 km

D) 3.6 km

Show Answer

Answer:

Correct Answer: C

Solution:

Let the distance be $ xkm. $ Speed upstream $ =5-1=4km/h $ Speed downstream $ =5+1=6km/h $

$ \therefore $ $ \frac{x}{6}+\frac{x}{4}=1 $

$ \Rightarrow $ $ \frac{2x+3x}{12}=1 $
$ \Rightarrow $ $ 5x=12 $

$ \Rightarrow $ $ x=\frac{12}{5}=2.4km $

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Quantitative Aptitude Ques 641

Question: A man can row at 5 km/h in still water. If the velocity of current is 1 km/h and it takes him 1 h to row to a place and come back, how far is the place?

Options:

Answer:

Solution:

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