00:01
Hi, there is a question, you say that olivia is staying in a cottage along a beautiful straight shoreline.
00:05
Okay, so i'll be just redrawing, i'll be drawing the figure that has been given.
00:14
Cottage, this shoreline will be 4 km, this will be perpendicular, water is 2 km, and island is over here.
00:32
So, the thing is, now, what is, the question is, the shoreline is located 4 km east of the cottage, and island is located 2 km north.
00:53
Olivia plans to travel from the cottage to the island by some combination of walking and swimming.
00:58
The car, she can start to swim point p between the cottage and this, and then walk 3 km per hour and swim 2 km per hour.
01:09
What is the minimum possible time that it will take, take olivia to reach the island? let us say, this distance is x.
01:24
So, this distance is gonna be equal to 4 minus x.
01:28
So, let us say, olivia walks from point a to point b, and then swims from point b to point b...