Question

a boat travels a distance of 6 miles in 24 minutes in still water and in 18 minutes with the current. what will be the time , in hours , taken by the boat to travel 20 miles with the current and return to the Starting point?

Answer 1

Answer:

60 min

Step-by-step explanation:

velocity of boat (v) = 6/24= 1/4miles/min

velocity of current =u

effective velocity= u+v

6/(u+1/4)=18

from here u=1/3-1/4=1/12

time taken for 20 miles= 20/(1/4+1/12)=20*3= 60min