Based on the bellow information, what is the wholesale cost of the earrings?

Question

If a retail jeweler sells a pair of gold earrings for $213.90. The jeweler uses a 130% markup based on cost.

Answer 1

Change 130% to 1.3 factor

Cost x 1.3 = $213.90

So cost = 213.90/1.3 = $164.54