Question

Barbara was baking a cake and could not find her tablespoon measure. The recipe calls for3 1/3 tablespoons. How many teaspoons must Barbara use in order to have the recipe turnout all right?

Answer 1

1 tablespoon is equivalent to 3 teaspoons

To find the equivalence of 3 1/3 tablespoons in teaspoons, we can use the next proportion:

$\frac{1\text{ tablespoon}}{3\frac{1}{3}\text{ tablespoon}}=\frac{3\text{ teaspoons}}{x\text{ teaspoons}}$

Solving for x:

$\begin{gathered} 1\cdot x=3\cdot3\frac{1}{3} \\ x=3\cdot3+3\cdot\frac{1}{3} \\ x=9+1 \\ x=10 \end{gathered}$

Barbara must use 10 teaspoons