A man can row at 5 kmph in still water.
A man can row at 5 kmph in still water. If the velocity of current is 3 kmph and it takes him 1 hour to row to a place and come back, how far is the place?
Answer/Solution
1.6 km
Steps/Work
Explanation:
Speed in still water = 5 kmph
Speed of the current = 3 kmph
Speed downstream = (5+3) = 8 kmph
Speed upstream = (5-3) = 2 kmph
Let the required distance be x km
Total time taken = 1 hour
⇒ x/8+x/2=1
⇒x+4x=8
⇒5x=8
⇒x=1.6 km
Answer: Option E
Speed in still water = 5 kmph
Speed of the current = 3 kmph
Speed downstream = (5+3) = 8 kmph
Speed upstream = (5-3) = 2 kmph
Let the required distance be x km
Total time taken = 1 hour
⇒ x/8+x/2=1
⇒x+4x=8
⇒5x=8
⇒x=1.6 km
Answer: Option E