Let x be the closing price of the fast-food stock; then the closing price of the toy company stock is (x-24) dollars. You have then this equation for the total cost of the stocks 39x + 69*(x-24) = 1530 dollars. From the equation x == 29.50 dollars. ANSWER. The closing price for the fast-food stock is 29.50 dollars; for the toy company stock 29.50-24.00 = 5.50 dollars.