In an effort to satisfy local demand for various fuels, a modest-sized blending operation is considering mixing pure ethanol with gasoline using various schemes. One calls for preparing four fuels: E100, which is pure ethanol; E85 which is 85.0 vol% ethanol and 15.0% gasoline; E10 which is 10.0 vol% ethanol and 90.0% gasoline, and pure gasoline (E0). An estimate of the market for these fuels indicates that 2.00% of the demand (by volume) is for E100, 20.0% for E85, 40.0% for E10, and the remainder for pure gasoline (E0).

$527.7.if the following was the question  $527.7 is the answer.students who are trying to raise funds have an agreement with a local pizza chain. the chain has agreed to sell them pizzas at a discount, which the students can then resell to families in the local community for a profit. it is expected that of the 500 families in the community, at most 70% will buy pizza. based on a survey of their personal preferences, the students believe that they should order no more than 120 cheese pizzas, no more than 150 pepperoni pizzas, and no more than 100 vegetarian pizzas. they also want to make sure that at least 20% of the total pizzas are cheese and at least 50% of the pizzas are pepperoni. they make a profit of $1.45, $1.75, and $1.98, respectively, for each cheese, pepperoni, and vegetarian pizza they resell. how many pizzas of each type should they buy?