Weekly earnings

Question

Margie sells cars. She is paid $200 for each week that she works, plus $300 for every car she sells.

 

A) How many cars does Margie need to sell her weekly earning to be more than $2000?

 

B) Graph the solution set for this problem on a number line

Answer 1

Margie wants to earn $2,000 per week.

She is paid a salary of $200, so the difference between her salary and $2,000 must come from her commissions.

So, she needs to earn $2,000 - 200 = $1,800 in commissions

 

Her commission rate is $300 per car, so we divide $1,800 by $300 to get 6 cars

 

So, in order to earn more than $2,000 per week, she will need to sell at least 7 cars.