Jesse wants to use a recipe which calls for 1 1/2 tsp cinnamon to make as many cupcakes as he can. Jesse has only 1 tsp of cinnamon, so he cannot make a whole batch. What fraction of the batch can Jesse make if he uses all his cinnamon
1 1/2 = 3/2
1 = 2/2
(2/2)/(3/2) = 2/3