The Scottie Sweater Company produces sweaters under the Scottie label. The company buys raw wool and processes it into wool yarn from which the sweaters are woven. One spindle of wool yarn is required to produce one sweater. The costs and revenues associated with the sweaters are given below:

	Per Sweater
Selling price		$	35.00
Cost to manufacture:
Raw materials:
Buttons, thread, lining	$ 2.00
Wool yarn	18.00
Total raw materials	20.00
Direct labor	7.00
Manufacturing overhead	10.50		37.50
Manufacturing profit (loss)		$	(2.50)

Originally, all of the wool yarn was used to produce sweaters, but in recent years a market has developed for the wool yarn itself. The yarn is purchased by other companies for use in production of wool blankets and other wool products. Since the development of the market for the wool yarn, a continuing dispute has existed in the Scottie Sweater Company as to whether the yarn should be sold simply as yarn or processed into sweaters. Current cost and revenue data on the yarn are given below:

	Per Spindle of Yarn
Selling price		$	25.00
Cost to manufacture:
Raw materials (raw wool)	$12.00
Direct labor	2.40
Manufacturing overhead	3.60		18.00
Manufacturing profit		$	7.00

The market for sweaters is temporarily depressed, due to unusually warm weather in the western states where the sweaters are sold. This has made it necessary for the company to discount the selling price of the sweaters to $35 from the normal $45 price. Since the market for wool yarn has remained strong, the dispute has again surfaced over whether the yarn should be sold outright rather than processed into sweaters. The sales manager thinks that the production of sweaters should be discontinued; she is upset about having to sell sweaters at a $2.50 loss when the yarn could be sold for a $7.00 profit. However, the production superintendent does not want to close down a large portion of the factory. He argues that the company is in the sweater business, not the yarn business, and that the company should focus on its core strength.

All of the manufacturing overhead costs are fixed and would not be affected even if sweaters were discontinued. Manufacturing overhead is assigned to products on the basis of 150% of direct labor cost. Materials and direct labor costs are variable.

Required:

1-a.	What would be the increase or decrease in unit contribution if the yarn is further processed into sweaters? (Round your answer to 2 decimal places.)