SOLUTION: the average salary for computer programers is$7740 less than twice the average salary for carpenters. Combined, their average salaries are 99,000 determine the average salary for

Algebra ->  Linear-equations -> SOLUTION: the average salary for computer programers is$7740 less than twice the average salary for carpenters. Combined, their average salaries are 99,000 determine the average salary for       Log On


   



Question 230365: the average salary for computer programers is$7740 less than twice the average salary for carpenters. Combined, their average salaries are 99,000 determine the average salary for each of this jobs....i need to get the formula to solve the problem
Answer by texttutoring(324) About Me  (Show Source):
You can put this solution on YOUR website!
We need 2 equations with 2 variables.
Let x = Computer Programmer's salary
Let y = Carpenter's salary
Eqn 1: x=2y-7740
Eqn 2: x+y=99000
To solve, substitute Eqn 1 into Eqn 2 and solve for y:
2y -7740 +y =99000
3y=106740
y=35580
Use Eqn 2 to find x:
x + 35580 = 99000
x=63420
The carpenter's salary is $35580 and the computer programmer's salary is $63420.