If a recipe calls for 2 teaspoons of vanilla extract to make 3 dozen cookies, how many teaspoons are needed for 2 dozen?

Answer 1

T/2 = 2/3 the ratio of teaspoons to dozens is a constant. It's the same ratio

multiply both sides by 2

T = 4/3 = 1 1/3 teaspoons to make 2 dozen

2 dozen is 2/3 of 3 dozen

2/3 times 2 teaspoons = 2/3 x 2 = 4/3