Question

A boat takes total time of 6 hours to travel downstream from point a to point b and upstream from point b to point a the distance between point a and b is 24 kms speed of a boat in still water is thrice the speed of the current. What is the speed of the boat in still water

Answer 1

     The Speed of the boat in still water will be 9 Kmph.

• Let’s assume speed of the current = x kmph
• So as per the question the speed of the boat in still water is = 3x kmph
• Speed of the boat downstream =Speed of the boat+ Speed of the current= 3x+x=4x kmph
• Speed of the boat upstream = Speed of the boat- Speed of the current =3x−x=2x kmph  
• 24/4x+24/2x=6
• So, 6/x+12/x=6
• So, 18/x=6
• So, x=3
• speed of the boat in still water =3x=3*3=9 kmph