A pair of cuff links was marked up 225 from cost which amoun

A pair of cuff links was marked up $225 from cost, which amounts to a 50% increase. Find the original cost of the pair of cuff links

Let x = original cost
then from \"marked up $225 from cost, which amounts to a 50% increase\" we get:
.50x = 225
x = 225/.50
x = $450 (original cost)