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The cost of living year went 3%.Fortunately,Alice Swanson got 3% raise in her salary...

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klady12 | Student, College Freshman | eNoter

Posted March 11, 2013 at 7:40 PM via web

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The cost of living year went 3%.Fortunately,Alice Swanson got 3% raise in her salary from last year.This year she is earning $22,660.How much did she make last year?

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justaguide | College Teacher | (Level 2) Distinguished Educator

Posted March 15, 2013 at 6:22 PM (Answer #1)

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Alice Swanson got a 3% raise in her salary this year compared to her salary last year. This year she is earning $22,660. Let her salary last year be X. As $22660 is 3% greater than X, X*(1 + 0.03) = 22660

=> X = 22660/1.03 = $22000

Her salary last year was $22000.

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pheintzelman | eNotes Employee

Posted March 11, 2013 at 10:38 PM (Answer #1)

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The first sentence is intended to throw you off. The cost of living has nothing to do with calculating Alice's past salary.


To solve word problems it often helps to turn them into an algbric fromula and then solve the fromula.

Let x be Alice's salery last year and raise can be her raise.

x * (raise) + x = 22660

or

x * (raise+1) = 22660

The plus one is needed because her raise is 3% more. So we want to use 103% or 1.03. 

x*1.03 = 22660

Solve for x

x = 22660/1.03

x = 22000 :)

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