Juan makes fruit smoothies for a school picnic. He has 12 bananas and uses 1/3 of a banana for each smoothie. If he needs 30 smoothies for the school picnic, does he have enough bananas? Explain your thinking with an equation or model.
If he needs 1/3 of a banana for each smoothie, he needs a total of 1/3*30 bananas. Because he has 12, 12>10, so he has enough.