A bakery frosted an 8-inch-by-8-inch square cake on one side with vanilla frosting and o...

A bakery frosted an 8-inch-by-8-inch square cake on one side with vanilla frosting and on the other side with chocolate frosting, as shown next. Brian prefers vanilla frosting over chocolate in a 5-to-1 ratio. Jody likes chocolate slightly more than vanilla, for a vanilla-to chocolate ratio of 4 to 5. Kurt will eat only chocolate frosting, and Francis will eat only vanilla frosting. Consider the following cake and the cake portions shown.

Consider your results from Problem 14. For each of the following, describe a new portion of cake containing both chocolate and vanilla, to which Francis would assign the given dollar amount.

a. $3.50

b. $2.50

c. $6.75