SAT WORD PROBLEM PREP

Question

Megan's summer job pays either $8.55 per hour or 20% commission on what she sells. Megan works for 10 hours and sells $450 worth of stuff on day one. On day two, she works 7 hours and sells $375 worth of stuff. Which option should she pick to make the most money on both days combined? How much more money will she make by picking the job that pays more?

Answer 1

Add up the amounts for each option  

 

10 + 7 hours = 17 hours  ==>  17*8.55 = $145.35  at $8.55 per hour

 

450 + 375 = $825*(0.20) = $165  at 20% commission  

 

The 20% commission option is more by 165 - 145.35 = $19.65