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An employment agency specializing in temporary construction help pays heavy equipment operators 
$130 per day and general laborers 
$93 per day. If thirty-four people were hired and the payroll was 
$3717, how many heavy equipment operators were employed? How many laborers?

An employment agency specializing in temporary construction help pays heavy equipment operators $130 \$ 130 per day and general laborers $93 \$ 93 per day. If thirty-four people were hired and the payroll was $3717 \$ 3717 , how many heavy equipment operators were employed? How many laborers?

Full solution

Q. An employment agency specializing in temporary construction help pays heavy equipment operators $130 \$ 130 per day and general laborers $93 \$ 93 per day. If thirty-four people were hired and the payroll was $3717 \$ 3717 , how many heavy equipment operators were employed? How many laborers?
  1. Define variables: Step 11: Define the variables for the number of heavy equipment operators and laborers.\newlineLet xx be the number of heavy equipment operators.\newlineLet yy be the number of general laborers.\newlineTotal number of people hired: x+y=34x + y = 34
  2. Set up payroll equation: Step 22: Set up the equation for the total payroll.\newlinePay for heavy equipment operators: $130\$130 per day.\newlinePay for laborers: $93\$93 per day.\newlineTotal payroll equation: 130x+93y=$3717130x + 93y = \$3717
  3. Solve system of equations: Step 33: Solve the system of equations.\newlineFrom Step 11: y=34xy = 34 - x.\newlineSubstitute yy in the payroll equation:\newline130x+93(34x)=3717130x + 93(34 - x) = 3717\newline130x+316293x=3717130x + 3162 - 93x = 3717\newline37x+3162=371737x + 3162 = 3717\newline37x=3717316237x = 3717 - 3162\newline37x=55537x = 555\newlinex=55537x = \frac{555}{37}\newlinex=15x = 15
  4. Find values of x and y: Step 44: Find the value of y using x=15x = 15.\newliney=3415y = 34 - 15\newliney=19y = 19

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