How do you get the original price off a mark down?

Answer 1

Say the mark down is x percent (.01x)

the mark down price is M

the original price is O

O - .01x(O) = M

O(1 - .01x) = M

O = M/(1-.01x)

For example say the mark down is 25% and markdown price is $75

O= original price = 75/((1-.25) = $ 100