Student Edition - Mathematics in Context - Britannica

Many ChangesCDiane is in favor of displaying the discount in dollars.Juan thinks it will be easier for customers if only the newprice appears on the signs.GrapesWere $3.20/kgNow 25% off4. What kind of sign do you prefer? Why?The employees decide to combine ideas. They will use apercent bar, the percent discount, and both the original priceand the sale price on each sign.Granny SmithApplesWere $2.89/kgNow 20% offJuan studies the new grapessign and says, “This is great!You can tell just by lookingat the sign what fraction orpercent the customers willhave to pay. You can checkthe sale price by doing onesimple multiplication.”GRAPESWere $3.20 per kgNow 25% off0$2.40 $3.2025% off0%Now $2.40 per kg100%5. Use their ideas to design new signs for the GrannySmith and Red Delicious apples.6. a. What fraction and percent of the original price docustomers have to pay for grapes?Red DeliciousApplesWere $2.40/kgNow 15% offb. What multiplication can customers use to check thesale price for grapes?c. Compute the new prices for the Granny Smith andRed Delicious apples using only one multiplicationfor each.Section C: Many Changes 19