What is the percent increase of the price of a hair piece that was increased from 500 to 550?

To calculate the percent increase of the price, you can use the formula:

Percent Increase = [(New Value – Old Value) / Old Value] x 100

In this case, the old value is 500 and the new value is 550. Plugging the numbers into the formula:

Percent Increase = [(550 – 500) / 500] x 100

This simplifies to:

Percent Increase = [50 / 500] x 100

Calculating this gives:

Percent Increase = 0.1 x 100 = 10%

So, the price of the hair piece has increased by 10%.