Theodore firs uses 1/2 of milk to make hot chocolate: 1 - 1/2 = 1/2. So 1/2 of milk is left. After that, he uses 3/2 of the milk he has left to make cookies. It means: 1/2 - ( 2/3 * 1/2 ) = 1/2 - 1/3 = 3/6 - 2/6 = 1/6 At the end 1/6 of the milk Theodore have left. 1/6 * 6 = 1 gallon Answer: After making hot chocolate and the cookies 1 gallon of milk Theodore have left.
