00:01
Hi.
00:03
So we are to solve for the training heart rate for a 50 year old with a resting heart rate of 65 beats per minute.
00:11
So we're given with the formula here for the training heart rate.
00:16
Let me just rewrite it here.
00:20
That's equivalent to the maximum heart rate, max heart rate minus the resting heart rate multiplied by 0 .65 and then we'll add the resting heart rate again.
00:47
First we need to solve for the maximum heart rate and we're given with the formula here as well that's from b maximum heart rate is equivalent to 220.
01:02
We'll subtract the person's age which is 50.
01:07
So maximum heart rate is to 20 minus 50.
01:10
This would give us one seven zero.
01:13
So now that we know the maximum heart rate we could now solve for the training heart rate.
01:24
The maximum heart rate is 170.
01:27
The resting heart rate is given.
01:30
It's 65 bits per minute.
01:36
Multiply this by 0 .65 and then add the resting heart rate again.
01:42
It's 65 bits per minute.
01:46
So solving for this, let's calculate the value of 170 minus 65 first...