Madison bought a new phone at 20% off the original price. if she paid $320 what was the original price of the phone

400

Step-by-step explanation:

320/(1-0.2)=Original price

400x0.8=320

$400

Step-by-step explanation:

Hi we have to use the Rule of the Three

The price that we paid represents the 80% of the original prize

Hence we have that

$320⇒80% (.8)

$x⇒100%(.1)

As we know we have to multiply diagonally and divide with the one in the corner

So we have (320)*(1 )=320 and then divide

Hence the original price was $400

so, converting firstly the mixed fractions to improper fractions and then "adding".