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FS10_1825_006_Oct6_notes_3pages

FS10_1825_006_Oct6_notes_3pages - MTH1825sec.006...

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MTH 1825 sec. 006 Wednesday, Oct. 6, 2010 Page 1 of 3 Section 3.4 – Applications of Systems of Linear Equations in Two Variables We will just set up a system of two equations for each problem. Solve these on your own using the substitution method or the addition method. Objective 1: Applications Involving Cost Ex 1) Kathleen sells two sizes of a handmade craft at a kiosk in a mall. The small size costs \$5 and the large size costs \$12. If Kathleen sells a total of 105 items during a particular week and has a total revenue of \$826 for that week, how many of each type did she sell? Ex 2) Ronald bought 3 hamburgers and 2 orders of fries for his family and paid \$8.25. Leon bought 5 hamburgers and 4 orders of fries for his family and paid \$14.61. What was the cost of one hamburger? What was the cost of one order of fries? Ex 3) Janice has 3 less dimes than nickels. The total value of her dimes and nickels is \$4.80. How many dimes does she have? How many nickels does she have?

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