7
Q:
A) 1.78 kmph | B) 2.35 kmph |
C) 2.83 kmph | D) 3.15 kmph |
Answer: C) 2.83 kmph
Explanation:
Explanation:
Given speed of the person = 8 1/2 = 17/2 kmph
Let the speed of the stream = x kmph
speed of upstream = 17/2 - x
speed of downstream = 17/2 + x
But given that,
2(17/2 - x) = 17/2 + x
=> 3x = 17/2
=> x = 2.83 kmph.