Question

joel wants to buy a new tablet computer fram a store having a 20% off sale on all tablets. the tablet he wants has an original cost of $190. he also wants to make sure he has enough money to pay the 5% sales tax.
part one
joel uses the incorect expression 0.95(190)(0.8) to calculate that the tablet will cost him a total of $144.40. Describe his error and write the correct expression

part two
how much will joel pay for the tablet
SHOW YOUR WORK



if you answer this question correctly you will receive a prize of 99 points
GOOD LUCK

Answer 1

Answer:

joel subtract the 5% sales tax.

The correct expression is

1.05(190)(0.8) = $159.60

Answer 2

Answer:

190 *.80 *(1.05)

Instead of adding the sales tax, he subtracted the sales tax.

159.60

Step-by-step explanation:

If Joel gets 20% off, he still has to pay (100-20) or 80%

The cost of the tablet is now 190 * .80

Then he has to pay 5% sales tax.

The tax is the prices times 5%   plus the original price

190 *.80 *(1+.05)

or 190 *.80 *(1.05)

Instead of adding the sales tax, he subtracted the sales tax.

The total he needs to pay is

190 *.80 *(1.05)

159.60