SOLUTION: Donna uses a 10% off coupon at her local nursery. After buying azaleas, bougainvillea, and bags of potting soil, her checkout price before tax is $217.95. How much would she have p

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Donna uses a 10% off coupon at her local nursery. After buying azaleas, bougainvillea, and bags of potting soil, her checkout price before tax is $217.95. How much would she have p      Log On


   

Question 153276: Donna uses a 10% off coupon at her local nursery. After buying azaleas, bougainvillea, and bags of potting soil, her checkout price before tax is $217.95. How much would she have paid without the coupon?
Answer by jojo14344(1513) About Me  (Show Source):
You can put this solution on YOUR website!
Remember:
P=price for the stuff Donna bought
Putting into eqn less 10%:
P-10%P=$217.95+tax ---->P-0.10P=217.95%2Bcross%28tax%29
*tax is negligible in this case since we're not on the total pay out price.
Continuing,
P%281-0.10%29=217.95
P%2Across%280.90%29%2Fcross%280.90%29=cross%28217.95%29242.17%2Fcross%280.90%29
P=242.17 ---------> PRICE WITHOUT 10% COUPON
Thank you,
Jojo