Genise is making cookies. She needs 1 2/3 cups of flour for one batch, but she wants to make 2 1/2 batches. Which equation can be used to find how much flour Genise will need?
a.1 2/3 x 2 1/2
b. 1 2/3 divided by 2 1/2
c. 1 2/3 + 2 1/2
d. 1 2/3 - 2 1/2