Question

HELP!! // The phone case you want to buy is marked down 25%, and you have a 10% off coupon. You pay $27.00. Can this equation be used to find the original price of the phone case? Explain why the equation does or does not fit the scenario, then determine the original price of the phone case.

(0.75c) = 27

Answer 1

The original price is $40.00.

Explanation:

I am not sure what that given equation is.

But here is the correct answer and steps.

The marked down price is 75% of the original price.

The final price is 90% of the marked down price.

Lets say

`T` = Final Price

`O` = Original Price

We can write

`T=(0.75*O)*(0.9)`

Multiply
`0.9` by
`0.75`.

`T=0.675*O`

We are given the final price. Lets substitute 27.00 for
`T`.

`27.00=0.675*O`

Divide both sides of the equation by
`0.675`.

`40.00=O`