Anita, Quentin, and Maria are baking cookies together. They need 3/4 cup of flour
and 1/3 cup of butter to make a dozen cookies. They each brought the ingredients they had at home. Anita brought 2 cups of flour and 1/4 cup of butter, Quentin brought 1 cup of flour and 1/2 cup of butter, and Maria brought 11/4 cups of flour and 3/4 cup of butter. If the students have plenty of the other ingredients they need (sugar, salt, baking soda, etc.), how many whole batches of a dozen cookies can they make?
total flour = 2 + 1 + 1.25 = 4.25
would yield 4.25 cups * (1 doz / .75 cup) = 5.666666 or 5 2/3 dozen
total butter = 1/4 + 1/2 + 3/4 = 1.5
would yield 1.5 cups * (1 doz / 1/3 cup) = 4.5 dozen
well, we run out of butter after 4.5 dozen so we can make gooey paste with the left over flour.