Question

A collector originally purchased an autographed football for $450. After holding onto the football for a

Answer 1

Answer:

810

Step-by-step explanation:

450 × 1.80 = 810

The 1 represents how there is no markdown and the .80 is the 80% being marked up.

I think there is a more specific equation for this than the one I showed, but this was my way of solving these questions without giving myself a headache