00:01
Here our problem involves the variation that combines direct and inverse variation.
00:06
To solve it we can use the full step procedure for solving the variation problems.
00:13
So let us take this step first.
00:16
Write the equation of a variation.
00:18
The bmi varies.
00:21
This bmi varies directly with weight.
00:24
It varies directly with the weight and it varies inversely with the square of height.
00:31
Let w represents the weight in pounds.
00:35
This weight in pounds it is calculated and h represents the height.
00:41
It is the height.
00:43
It is represented in the inches.
00:46
Then the equation of variation that combines direct and inverse variation is bmi it is equal to k multiplied by weight divided by h square where k is a constant of the variation.
01:01
Then this was the first step in which we have written the formula.
01:06
Then the second step is use the given information to find the constant of variation k.
01:12
Now we will find the k which is the constant.
01:15
For the first person who weights 180 pounds, its weight that is w1 we consider it is 180 pounds and is 5 feet that means its height is 5 feet which is nothing but equal to the 60 inches.
01:35
It is 60 inches...