Charlotte has two job offers as a car sales person. The first job will pay her $600 a month plus 2% on the price of her car sales. The second job will pay $1000 a month plus 1% on the price of her sales. How much must she sell each month to make the same income from the two jobs?
$20,000
$30,000
$40,000
$50,000

Question

Charlotte has two job offers as a car sales person. The first job will pay her $600 a month plus 2% on the price of her car sales. The second job will pay $1000 a month plus 1% on the price of her sales. How much must she sell each month to make the same income from the two jobs? 
    $20,000 
   $30,000 
   $40,000 
   $50,000

anonymous · Answer

Well, the amount she would make from the first job can be expressed as$$m=600+0.02 \times s$$where m is the money she makes and s is the price of her sales.  The second job would be$$m=1000+0.01 \times s$$Just set them equal and then solve for s:$$600+0.02 \times s=1000+0.01 \times s$$