a. If an item is on sale for $47 after a discount of 15% off its retail price, what was the original retail price? $ 54.05 Preview b. If an item is on sale for $182 after a discount of 45% off its retail price, what was the original retail price? $ 263.9 Preview c. If an item is on sale for $310 after a discount of 40% off its retail price, what was the original retail price? $ 434 Preview