Chapter 4 - Proportions, Percents, and Solving Inequalities - 4.3 - More on Percents and Problem Solving - Problem Set 4.3 - Page 161: 25

He would have to sell the stock at 38.64 dollars.

We can use the following guideline to solve this problem: Buying price - Price drop = Selling price So, 42.00 - 8% $\times$ 42.00 = Selling price 42.00 - .08 $\times$ 42.00 = Selling price 42.00 - 3.36 = Selling price 38.64 = Selling price He would have to sell the stock at 38.64 dollars.