A man rows 750 m in 675 seconds against the stream and returns in 7 and half minutes. His rowing
speed in sƟll water is  Choose the correct choice from the following choices:
A) 4 kmph
B) 5 kmph
C) 6 kmph
D) 7 kmph
E) None of these
Explanation:   Rate upstream = (750/675) = 10/9 m/sec   Rate downstream (750/450) m/sec = 5/3 m/sec   Rate in still water = (1/2)*[(10/9) + (5/3)] m/sec.   = 25/18 m/sec   = (25/18)*(18/5)= 
<gadget id="calculator">(25/18)*(18/5)</gadget>
<output>5</output>
5 kmph   Answer: 5 kmph
<result>B</result>
A man rows 750 m in 675 seconds against the stream and returns in 7 and half minutes. His rowing
speed in sƟll water is