Simple Interest

Interest calculations, whether for a loan or an investment, are exactly the same. Interest calculations can be either in simple interest or compound interest. For simple interest, the principal only earns interest. For compound interest, both the principal, as well as previously earned interest, earn interest.

Retailing Discounts

A trade discount, or discount, is a percentage reduction to the retailer by a manufacturer or wholesaler. It is most often expressed as a percent decrease applied to a list price (LP), or suggested retail price. The discount is subtracted from the list price to provide the net price (NP), the price the retailer actually pays for the particular item.

Solve Math Word Problems

Word problems often trip up even the best math students. Many get stumped trying to figure out what they're looking to solve. Without knowing what's being asked, students have trouble making sense of all the critical information in the question.

Annuities

An annuity, whether as a loan or investment, consists of a series of payments, not just a single payment.

Markdown and Extent of Markdown

Often in retailing the selling price, S, is subjected to the decrease process for a variety of reasons. Markdown is the customary word used to describe the decrease process in retailing. Formulas previously developed for the decrease process are thus appropriate for the specific situation of markdown in retailing.

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