Question

The cost of a jacket increased from $90.00 to $108.00. What is the percentage increase of the cost of the jacket?

Answer 1

For this case we can make the following rule of three:
90.00 $ -----------------> 100%
$ 108.00 ---------------> x
From here, we clear the value of x.
We have then:

`x = (108/90) * (100) x = 120`
Then, the percentage of increase is:

`120 - 100 = 20`
Answer:
The percentage increase of the cost of the jacket is 20%