Home » Aptitude » Boats and Streams » Question
  1. A swimmer's speed downstream is 11 km/h and speed of the stream is 1.5 km/h. Find the upstream speed of swimmer. ?
    1. 8 km/h
    2. 9.5 km/h
    3. 9 km/h
    4. 6. 25 km/h
Correct Option: A

Rate of stream = ( Speed downstream - Speed upstream )/2
⇒ 1.5 = (11 - Speed upstream)/2
⇒ 11 - Speed upstream = 3
∴ Speed upstream = 11 - 3 = 8 km/h



Your comments will be displayed only after manual approval.