Answer:
Step-by-step explanation:
The regular price is $62.50.
Explanation:
If the sale price is $50, and the sale is 20% off, that means the $50 represents the other 80% of the regular price—the part that you do pay. So then we ask ourselves, okay, $50 is 80 percent of... what? In math speak, that would be written as
$50(is)80%(of)(regular price)
$50=80% × r
Solving this for r, we get
r=$5080%
We remind ourselves that the "percentage" symbol is just a shorthand for "divide this number by 100." The equation becomes
r=$5080/100=$500.8=$62.50
So the regular price is $62.50.
Bonus:
A general formula can be used for any regular price r, any percent discount p, and any sale price s:
p%off of reg.price is sale price
(100−p)%× r = s
As long as we know two of the three variables {p,r,s}, we can solve for the third one.
Learn more : brainly.com/question/tcs1299821
