An answering machine cost a dealer $220.00 less 31.5%, 7%. It is regularly priced at $ XXXXXXXXXXThe dealer's overhead is 17% of the regular selling price and the answering machine was cleared out for...

An answering machine cost a dealer $220.00 less 31.5%, 7%. It is regularly priced at $212.00. The dealer's overhead is 17% of the regular selling price and the answering machine was cleared out for $175.45. What was the rate of markdown at which the  answering machine was sold? Round to nearest 100th