Math Sale Price/Discount

Simple Interest

Interest = Principal x rate x Time or I = PRT She decides to put all $4000 in the bank and leave it untouched for two years until she finishes high school. The bank offered her a 4% interest rate.

Discount

How much money is subtraced or what percent is on dicount of the orginal price. In a grocery store, a $12 case of soda is labeled, "Get a 20% discount."

Tax/Tip

Tax is usually around 7% of the total which you have to pay while tip is extra but should pay around 15-20% for sevice. Your parents wanted to give the waiter a 15% tip. If the total amount of the dinner was $42.00, what should be paid to the waiter as a tip?

Percent Change

The amount of money that chages based on markup and markdown A computer this year cost 875 and last year it cost 745 what percent have it been marked up

Stores Cost

The amount that the stores pays to create or obatian the object to sell

Selling price

the amount that the consumer pays to buy it and is more than what the compay payed for it Calculators are sold to students for 20 dollars each. Three hundred students are willing to buy them at that price. For every 5 dollar increase in price, there are 30 fewer students willing to buy the calculator. What selling price will produce the maximum revenue and what will the maximum revenue be?

Sale Price

The sale price can be calculated by subtracting the discount percent from 100 In a department store, a $40 dress is marked, "Save 25%."