6.5 (0) Shirley Sixpack, as you will recall, thinks that two 8-ounce cans of beer are exactly as good as one 16-ounce can of beer. Suppose that these are the only sizes of beer available to her and that she has $30 to spend on beer. Suppose that an 8-ounce beer costs $.75 and a 160unce beer costs $1. On the graph below, draw Shirley's budget line in blue ink, and draw some of her indifference curves in red. 8-ounce cans 0 10 20 30 40 16-0unce cans (a) At these prices, which size can will she buy, or will she buy some of each? ( b ) Suppose that the price of 160unce beers remains $1 and the price of 8ounce beers falls to $.55. Will she buy more 8-0unce beers? (c) What if the price of 80unce beers falls to $.40? How many S-ounce beers will she buy then