Problem Solving (PS) | Re: A shoe store sells a new model of running shoe for $32. At that price

The current revenue from the shoes = 80*32 = 2560

Now, let 2x be the reduction in price. Thus, 20x additional pairs of shoes will be sold.

Since the new revenue should be more than or equal to the current revenue,

(32-2x)*(80+20x) >= 2560
2560 - 160x + 640x - 40x^2 >= 2560

x^2 - 12x <= 0
x(x-12) <= 0

Thus, x can take any value from 0-12.

The range of values will be 13.

Thus, the correct option is B.

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