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## Solve Equations Word Problems

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**A school has $6500 budgeted for textbooks. The principal**wants to buy 120 new geography textbooks for $39.95 each. How much money will be left in the textbook budget after the purchase?**Use the formula I = prt**• Find the interest after two years at 5% with a principal deposit of $1000.**Use I = prt**• How much would need to be deposited to gain an interest of $75 at a rate of 3% over five years?**Money**• Mr. Thomsen plans to purchase a used car priced at $8400. He will receive a 15% employee discount and then will have to pay a 5.5% sales tax. What will be the final price of the car?**Average**• Bill Gutierrez drove at a speed of 65mph for two hours. He then drove for 1.5 hours at a speed of 45mph. What was his average speed?**Mixtures**• Chocolate chip cookies sell for $6.95 per pound and white chocolate cookies for $5.95 per pound. How many pounds of chocolate chip cookies should be mixed with 4 pounds of white chocolate cookies to obtain a mixture that sells for $6.75 per pound.**D=RT**• Two cyclists begin traveling in opposite directions on a circular bike trail that is 5 miles long. One cyclist travels 12 miles per hour, and the other travels 18 miles per hour. How long will it be before they meet?**#13 on homework**• In Mrs. Martinez’s science class, a test is worth three times as much as a quiz. If a student has test grades of 85 and 92 and quiz grades of 82, 75, and 95, what is the student’s average grade?**Number 14**• At Westbridge High School, a student’s grade point average is based on the student’s grade and the classs credit rating. Brittany’s grades for this quarter are shown. Find Brittany’s GPA if a grade of A equals 4 and a B equals 3.**Number 15-18**• In 2005, the international price of gold was $432 per ounce, and the international price of silver was $7.35 per ounce. Suppose gold and silver were mixed to obtain 15 ounces of an alloy worth $177.21 per ounce. • 15. copy and complete the table below.**16. Write an equation to represent the problem.**• How much gold was used in the alloy? • How much silver was used in the alloy?**Number 19**• The Madison High School marching band sold solid-color gift wrap for $4 per roll and print gift wrap for $6 per roll. The total number of rolls sold was 480, and the amount of money collected was $2340. How many rolls of each kind of gift wrap were sold?**Number 20-23**Party Supplies Inc. sells metallic balloons for $2 each and helium balloons for $3.50 per dozen. Yesterday, they sold 36 more metallic balloons than dozens of helium balloons. The total sales for both types of balloons were $281.00. 20.Copy and complete the table representing the problem.**21. Write an equation to represent the problem.**• How many metallic balloons were sold? • How many dozen helium balloons were sold?**Number 24**• Lakeisha spent $4.57 on color copies and black-and-white copies for her project. She made 7 more black-and-white copies than color copies. How many color copies did she make?