Question

Please help...I am really bad at math and need a step by step.

Answer 1

Please, type in your math problem first, and then please omit the "I am really bad at math" part. Why shoot yourself in the foot?

Answer 2

The problem is your friend clipped a coupon from the newspaper that offered 25 percent your lunch. the lunch cost 19.27 but I don't know how to find the answer

Answer 3

This being algebra, choose any letter of the alphabet to represent the amount your lunch cost before the 25% discount.

If we choose x to represent this, calculate the 25% discount and write it here.

Answer 4

$4.82 I Think

Answer 5

so.. are you looking for, how much was the lunch without the 25% off?

Answer 6

no, with the 25% off

Answer 7

well... so 19.27 - the 25%?

Answer 8

25% as a decimal is 0.25. so what is 0.25 x 19.27?

Answer 9

okay so 4.82

Answer 10

4.82 is the 25% of 19.27, yes

Answer 11

\(\bf {\color{brown}{ 25}}\%\ of\ 19.27 \implies \cfrac{{\color{brown}{ 25}}}{100}\cdot 19.27\implies {\color{brown}{ 25}}\div 100\cdot 19.27\)

Answer 12

But then it says find the tax which is 7% so would that be 0.7 x 4.82

Answer 13

well... nope
your cost is really 19.27 plus the savings, the 25%
so 19.27 - 25%

the tax includes the subtotal amount
hmmm 7/100 is NOT 0.7 btw, is 0.07
so

0.07 * (19.27 - 4.82)

Answer 14

okay let me try that

Answer 15

1.01?

Answer 16

yeap, the tax will be $1.01, a buck and 1penny

Answer 17

Let's start over. This problem need not be complicated.

Let x = original price of lunch
Let 0.25x = the 25% discount

The "net price" (price after discount) is (1-0.25)x=$19.27

Answer 18

...which translates into 0.75x=$19.27.

Divide both sides by 0.75 and you'll h ave your answer, the original price, x.

Answer 19

Calculate $19.27 / 0.75, please.

Answer 20

the last step is you have to tip the waitress 15%
So would you do 5.83 x 19.27

Answer 21

Could we finish one part at a time, please? What is the value of x?

Answer 22

25.69?

Answer 23

yes.

Answer 24

That's your first answer. Any questions regarding how we obtained that?

Answer 25

no, but now I need to find the tax
Which is 7%

Answer 26

So, you have to pay 7% tax? Is that 7% on the full price (x) or on the discounted price (0.75 x)?

Answer 27

My guess is that you're taxed on the discounted price, which is ... what?

Answer 28

So 25.69 x .07

Answer 29

Please, T_T, answer my question (above).

Answer 30

5.83 i think

Answer 31

T_T: I am becoming a bit frustrated because you're not answering my questions. I asked you whether sales tax is charged on the entire (before discount) amount, or on the discounted price (after discount).
If you ignore my questions, whether by accident or intentionally, you can't expect my interest level to remain high.

Answer 32

I am getting off the 'Net for now.