00:01
So, based on the given, the upward rate is given as 4 meters per day.
00:15
And then the downward rate is downward rate, we have 3 meters per day.
00:25
Okay? so the height that the worm needs to climb is given as 40.
00:33
Meters, okay? so we are asked the number of this.
00:39
It would take for the worm to crawl out in the hole.
00:46
Okay, so we'll call this our t.
00:51
Remember that rate or the could also be the speed is equivalent to distance over time.
01:04
Okay.
01:05
So yes, this is the formula of speed.
01:08
And if we rearrange this, our formula for time, time is equivalent to distance over the rate.
01:28
Okay? so time therefore, let's denote that as our t is equivalent to distance, which is 40 meters...