It is easy to solve using a "single equation setup". Let x be the closing price of one fast food share. Then the closure price of one toy company stock is (x-24) dollars. The equation for total stock portfolio is 28x + 68*(x-24) = 1488 dollars. It is your base equation. From the equation, x == 32.50. Answer. $32.50 for one fast food share and 32.50 - 24 = 8.50 dollars for one share of the toy company. CHECK. 32.50*28 + 8.50*68 = 1488 dollars. ! Correct !