Question

Rodney is making three pizzas the recipe says that for one pizza he needs 2 cups of flour 2 teaspoons of instant active dry yeast to clubs of garlic 1 tablespoon of olive oil and some other ingredients Rodney is out of flour and it goes to the store to buy a bag of containing 20 cups of flour how many flowers will he have left over after making the pizzas

Answer 1

The recipe says he needs 2 cups of flour each of three pizzas:
$2 \times 3 = 6$
He bought 20 cups of flour and after he finishes with pizzas:
$20 - 6 = 14$
14 cups of flour are left.