2) A man rows to a place 48 km distant and comes back in 14 hours. He find that he can row 4 km with the stream in the same time as 3 km against the stream. The rate of the stream is :
A) 1 kmph B) 1.5 kmph
C) 2 kmph D) 2.5 kmph
View Answer

• suppose he moves 4km downstream in x hrs
  speed dwn strm = 4/x
  speed up strm = 3/x
  48/4/x+48/3/x=14
  x=1/2
  speed dwn strm = 8
  speed upstrem =6
  rate of strm = 1/2(8-6)
  =1kmph
  
  
  
• 9 years agoHelpfull: Yes(2) No(0)