The markup percent is 66.7%
The first step is to calculate the unit cost
= Cost of the shirt/quantity of shirt
= 600/100
= 66
The percent mark up can be calculated as follows
= 100 × (new price-old price/old price)
= 100 × (10-6)/6
= 100 × 4/6
= 100 × 0.666
= 66.7
Hence the markup percent is 66.7%
Please see the link below for more information
https://brainly.com/question/20394148?referrer=searchResults
