john bought a new mac laptop for 520.99 with 15% sales tax. what was the original price and tax?

3 answers

1.15x = 520.99

x = 520.99/1.15

x = 453.03 >> original price

520.99 - 453.03 = _______ tax
Price * (1+0.15) = 520.99
Solve for price.

Tax is the difference between 520.99 and the original price.
thanks