Solve this problem using the proper formula. A carpenter is building a bookcase the perimeter of the top is 108 in. What length must the stock be if the width is 8 in.? The shelf is inches long.
Assuming the length is y and the width is x Perimeter = y + y + x + x = 2y +2x = 2 (y + x) if the is 8 and the perimeter is 108 108 = 2 (y +8) 108/2 = y+8 54 = y +8 54 - 8 = y 46 = y
