Write equations as you read the problem B + T = 681 (1) (total cost) B - T = 69 (2) (T costs 69 less than B) To solve, add equations. The terms with "T" will annihilate, and you will get then 2B = 681 + 69 = 750 ---> B = 750/2 = 375. Now from equation (1) T = 681 - B = 681 - 375 = 306. ANSWER. Table costs 306; B costs 375.