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 $2,000 in commissions on $5,000 worth of sales. What commission rate did the sales manager earn during that week?  Choose the correct choice from the following choices:
A) 25%	B) 30%	C) 35%	D) 40%	E) 45%
B for me.   Let managers comminsion rate be M.   m*5000+ 2*0.05*5000=2,000   5000*m=1500   m=30/100=30%
<result>B</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 $2,000 in commissions on $5,000 worth of sales. What commission rate did the sales manager earn during that week?