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Exercises 8.1 341- Thanks to conservation measures, Cattarauqua Ginseng Enterprises was able to reduce their offi ce electric usage this
year to 935,036 kilowatt-hours. This was a drop of 12.7% from last year’s usage. What was the usage last year? How
many kilowatt-hours did they save? - Attendance at the Campbelton Avengers’ minor league hockey games averaged 5,988 this year. This was an increase
of 8.4% over last year. What was the average attendance last year?
D. Comparing Markup with Markdown- A drugstore marked up a bottle of shampoo 40% over cost. The store manager wants to put the shampoo on sale at
cost. What percent markdown should he use to bring the price back to cost? - If prices are marked up by 22.5%, by what percent should they be marked down to bring the price back down to
cost? - A grocery store has been selling potato chips for 15% below the price printed on the bag. The store decides to
discontinue this practice and sell the chips for the printed price. What percent of a price increase does this change
represent? - A photocopier enlarges a copy by 25%. By what percent would you need to reduce a new copy to shrink the image
back to its original size? - A farmer harvested 18,340 bushels of soybeans this year. This was an 8% drop from last year’s harvest. By what
percent does his harvest need to grow next year in order to reach last year’s levels? - The volume control on an amplifi er decreases the volume (in decibels) by 20% for each click down. By what percent
does it increase the volume with each click up?
E. Grab Bag- a. An appliance store paid $193.05 each for a shipment of sewing machines, and marked the price up by 42%. What
was the marked-up price?
b. Three months later, the store decided to try to sell off the remaining machines by marking the price down by 25%.
What was the sale price of the machines? - A music store offers its employees a 30% discount. If the retail price of a CD is $14.99, how much would an employee
pay? - A department store uses a 30% markup on men’s casual wear. At the end of the summer season, the department
manager was told to mark everything in the store down to cost, so he marked down all of the prices by 30%.
a. What would the marked-down price be for a pair of shorts that originally cost the store $12.53?