Problema Solution
A trades worker is considering a job offer in another city. Her current job pays $2950 per month and is in a city with a cost of living index of 98.1. The cost of living index in the new location is 128.1. If she were to maintain her present lifestyle, how much would she need to earn per month in the new job?
Answer provided by our tutors
Cost of living must be directly proportional to salary.
We will set up a proportion with the ratio of the cost of living indexes and the ratio of the salaries.
Let x be the salary she would need at her new job then
98.1 : 128.1 = 2950 : x
x = (128.1 * 2950) / 98.1
x = $3851.14
She needs to earn $3851 per month to maintain her present lifestyle.