A man can row 30 km downstream and 20 km upstream in 4 hours. He can row 45 km downstream and 40 km upstream in 7 hours. Find the speed of man in still water?
A.15 kmph
B.10 kmph
C.12 kmph
D.12.5 kmph
Answer:D
A man can row 30 km downstream and 20 km upstream in 4 hours. He can row 45 km downstream and 40 km upstream in 7 hours. Find the speed of man in still water?
A.15 kmph B.10 kmph C.12 kmph D.12.5 kmph