If the limited resource can be increased by 610 hours, calculate the maximum increase in contribution margin. Assume that sweet acacia can sell all products manufactured.

Sweet Acacia Productions Limited manufactures and sells three different products of different qualities. They are referred to as: Normal, High, and Superior. The accounting department provides the following information on these products: Determine the contribution margin per machine hour. (Round answers to 2 decimal places, e.g. 15.25.)