Doug Turner Food Processors wishes to introduce a new brand of dog biscuits composed of chicken and liver flavored biscuits that meet certain nutritional requirements. The liver flavored biscuits contain

1

unit of nutrient A and

2

units of nutrient B; the chicken flavored biscuits contain

1

unit of nutrient A and

4

units of nutrient B. According to federalrequirements, there must be at least

40

units of nutrient A and

60

units of nutrient B in a package of the new mix. Inaddition, the company has decided that there can be no more than

10

liver flavored biscuits in a package. It costs

1

to make 1 liver flavored biscuit and

2

to make 1 chicken flavored. Doug wants to determine the optimal product mix for a package of the biscuits to minimize the firm's cost.

Number of liver flavored biscuits in a package =

(round your response to two decimal places).