RockySinha wrote:

A sales person earns as commission 5% on all sales between $ 2000 and 6000, and 8% on all sales over $6000. If in a week his commission is $460, what were his total sales?

(A)8000

(B)9000

(C)10000

(D)12000

(E) None of these.

Since the salesperson earned more than 0.05 x 6000 = 300 dollars, his total sales were more than 6000 dollars.

Now we can let x = his total sales; thus:

0.05(6000) + 0.08(x - 6000) = 460

300 + 0.08x - 480 = 460

0.08x - 180 = 460

0.08x = 640

x = 640/0.08 = 64,000/8 = 8,000

Answer: A

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