Bob Jones is the chief financial officer of PetPlay Inc., a large manufacturer of toys for pets. Bob is conducting a financial analysis of the firm's line of Squeaky toys which consists of three products: Small, Medium, and Large. Total sales for the three products in the recent year were $425,000, $275,000 and $550,000, respectively. Because there is a small amount of additional processing cost for each of the three products, which differs between the products ($50,000, $30,000, and $20,000, respectively), Bob has been using the net realizable value method for allocating the joint production cost of $600,000. However, he is not satisfied with the result of somewhat different gross margin percentage ratios (gross margin/sales) for the three products when using this approach. He knows only of the physical measure method, the sales value at the split-off method, and the net realizable value method for allocating joint cost. Required: Prepare a new cost allocation for Bob so that after the allocation of joint costs and separable costs, the gross margin percentage is the same for all three products.