A sales staff is composed of a sales manager and two sales people, all of whom earn commission as a percentage of sales. Each sales person earns 5% commission on sales. In a given week, the sales staff earned a total of $2,750 in commissions on $5,000 worth of sales. What commission rate did the sales manager earn during that week?	Choose one
A) 25%
B) 30%
C) 35%
D) 40%
E) 45%
E for me.   Let managers comminsion rate be M.   m*5000+ 2*0.05*5000=2750   5000*m=2250   m=45/100=45%
<result>E</result>
A sales staff is composed of a sales manager and two sales people, all of whom earn commission as a percentage of sales. Each sales person earns 5% commission on sales. In a given week, the sales staff earned a total of $2,750 in commissions on $5,000 worth of sales. What commission rate did the sales manager earn during that week?