Final answer:
To obtain a mixture that sells for $6.75 per pound, we need to mix 6 pounds of chocolate chip cookies with 4 pounds of white chocolate cookies.
Step-by-step explanation:
To obtain a mixture that sells for $6.75 per pound, we need to find the amount of chocolate chip cookies that should be mixed with 4 pounds of white chocolate cookies. Let's assume that the unknown amount of chocolate chip cookies is x pounds.
The total weight of the mixture is the sum of the weights of chocolate chip cookies and white chocolate cookies, so we have x + 4 pounds.
The cost per pound of the mixture is given as $6.75.
Using the given information, we can set up the equation:
(6.95 * x + 5.95 * 4) / (x + 4) = 6.75
Solving this equation will give us the value of x, which represents the number of pounds of chocolate chip cookies:
x = 6 pounds