00:01
Hi, from the question given that a small motor boat travel 13 miles per hour in still water.
00:13
So travel 13 miles per hour.
00:19
It takes 6 hours longer to travel 63 miles going upstream than it does going downstream.
00:28
So here we need to find the rate of the current.
00:30
So here let x be the rate of the rate of.
00:35
Of current and the rate of going downstream will be equal to 13 plus x miles per hour.
01:04
Similarly, the rate of upstream will be equal to 13 minus x miles per r.
01:18
Now, therefore, in downstream, the motorbike take time to go to 63 miles.
01:27
So time taken to go 63 miles in downstream will be 63 divided by 13 plus x.
01:51
Similarly time taken to go upstream for 63 mile so 63 divided by 13 minus x this is for r so this is for time taken to go to 63 miles in downstream so downstream means we need to divided by 13 plus x and if it is upstream in 13 minus x and also given according to the given question 6 hours longer to travel 63 miles going upstream than it is going downstream.
02:37
Therefore, subtract 63 divided by 13 minus x minus 63 divided by 13 plus x which could be equal to 6...