MA220Lesson6

# MA220Lesson6 - MA 220 Lesson 6 Sections 2.1 and 2.3 Solving...

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MA 220, Lesson 6, Sections 2.1 and 2.3 Solving Applied Problems Steps for solving an applied problem 1. Read the problem; carefully noting the information given and the questions asked. 2. Let a variable represent the unknown (or one of the unknowns) you are asked to find. 3. Think of a sentence or formula that relates the information given and the unknown(s). 4. From this plan, write and equation and solve. 5. Check your solution to ensure it is reasonable. Ex 1: The sum of two consecutive even integers is 166. Find the two integers. n = smallest of two integers n + 2 = largest of two integers Plan: smallest + largest = sum Ex 2: The bill for an auto repair was \$403 (before any taxes). The cost of part was \$225. The mechanic charged \$50 for the first hour of labor, then \$32 per hour for each additional hour of labor to repair the car. How many hours total did it take to repair the automobile? h = total number of hours Plan: parts + first hour’s labor + additional labor = total bill before taxes

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## This note was uploaded on 01/19/2012 for the course MA 22000 taught by Professor Staff during the Spring '08 term at Purdue.

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MA220Lesson6 - MA 220 Lesson 6 Sections 2.1 and 2.3 Solving...

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