2 dozen versus 3 dozen is 2 to 3 or 2/3 of the original.
Multiply 2/3 by the quantity of each.
FLOUR
=3 cups * 2/3
=(3)(2/3)
=(3*2)/3
=6/3
=2 cups flour
SUGAR
=1 cup * 2/3
=2/3 cups sugar
CHOCOLATE CHIPS
=2 cups * 2/3
=2 * 2/3
=(2*2)/3
=4/3 cups or 1 1/3 cups chocolate chip
ANSWER: 2 cups flour, 2/3 cup sugar, 4/3 or 1 1/3 cups chocolate chips
Hope this helps! :)