How would you work this problem? Thanks!

Josie paid $72.00 for a baseball glove. Price reflected 10% discount off regular price. What was regular price?

assume x is the undiscounted price

100% of x - 10% of x = 72
1.00x - 0.10x = 72
x (1.00-0.10) = 72
x (0.90) = 72
x = 72 / 0.90
x = 80

Regular price is $80.00