There are two (2) variations of this formula: 1) RP - C=MU and 2) RP - MU = C 6. Your school store buys a watch for $7.50 and sells it for $16.00. How much is the markup? $ 7. Jimbo buys a gold ring for $50.00. He then marks it up $150. What is the retail price of the ring? $ 8. Cheryl buys a new blouse for $20.00. If its markup was $7, what did the retailer pay for the blouse? $ 9. The cost of copier paper is $28.00 a ream. The school store sells it for $37.95. What is the markup? $ + the retail price? C Y711 c