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?
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
This is the end of the preview.
Sign up
to
access the rest of the document.
 Fall '10
 Cioni
 Algebra, Addition, Equations, ex, Fries

Click to edit the document details