Question

Set up a linear equation(s) that will help you to find a solution to the following problem: The average salary for computer programmers is $7740 less than twice the average salary for Carpenters. Combined their average salaries are $99,000. Determine the average salary for each job.

Answer 1

Hello,

Let x the average salary of the programmers
y .... of the carpenters

x+y=99000
x=2y-7740

==>
x+y=99000
x-2y=-7740
==>3y=106740 ==>y=35580
x=99000-35580=63420

Proof:
63420+35580=99000
2*35580-7740=63420