Question

WORTH 30 POINTS

Nataliia wants to buy a new tablet from a store having a 45% off sale on all tablets. The tablet she wants has an original cost of $180. She also wants to make sure she has enough money to pay the 5% sales tax. A) how much will nataliia pay for the tablet? B) nataliia used the incorrect expression 0.95(180)(0.55) to calculate that the tablet will cost her $94.05. Describe her error and write the correct expression.

Answer 1

=103.95

Final price = 180 *.55 * (1.05)

Explanation:

Discount is equal to original price times discount rate

Discount = 180 *45%

= 180 *.45

=81

New price = original price - discount

New price = 180 - 81

= 99

Tax = new price * tax rate

= 99 * 5%

=4.95

Final price = new price + tax

= 99 + 4.95

=103.95

45% off means she still needs to pay (100-45) or 55 percent of the price so

New price = 180 *.55

Tax means adding the 5 % to the price That is 1.05 percent of the price

She multiplied by .95 so she subtracted the tax instead of adding

Final price = 180 *.55 * (1.05)