The correct answer is; Raise her prices on the car detailing or only wash cars.
Further Explanation:
It makes the most sense that Betty Lou raise the pricing on the car detailing. Since the materials cost more than the washing materials and car detailing takes more time, she is losing money in the long run.
If Betty doesn't want to raise her prices, she should only continue to wash cars since she can do this faster and make more money on average. This is the most efficient use of her resources. Betty can use advertising to get more clients and repeat clients that liked her car detailing will be willing to pay more for her services.
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