A cookie recipe calls for 2 1/4 cups of flour. If Gustavo wants to make 1 1/2 times the recipe, how much flour does he need?

2 1/4 + 1 1/2
9/4 + 3/2 * 2
9/4 + 6/4 = 15/4 = 3 3/4
Is correct?

2 answers

No.

Don't add. Multiply 2 1/4 by 1 1/2.
9/4 + 3/2

(9 +6)/4 = 15/4 = 3 3/4
yes it is.