In a stream, B lies in between A and C such that B is equidistant from both A and C. A boat can go from A to B and back to C in 6 and 1/2 hours while it goes from A to C in 9 hours. How long would it take to go from C to A?please post approach @gyrodceite @pari1901 @CobainJr.

1) 3.75h
2) 4h
3) 4.25h
4) 4.5h

• 2) 4h is the ans
  AB=2AC
  distance is directly proportional to time, so total time from A to C and back=2*6.5=13 hours
  required time to go from C to A =13-9=4 hours
  
• 10 years agoHelpfull: Yes(0) No(1)