Question

A recipe calls for 1/2 cup of flour for every 8 teaspoons of milk. How much flour should be used for 4 teaspoons of milk? A) 1/8 cup B) 1/4 cup C) 1/2 cup D) 1 cup

Answer 1

We are told that a receipt requires 1/2 cup of flour for every 8 teaspoons of milk. To determine the amount of flour for 4 teaspoons of milk we can use the following method:

we divide the number of cups of flour over the number of teaspoons of milk, like this:

$\frac{\frac{1}{2}cf}{8ts}$

Solving we get:

$\frac{1}{16}\frac{cf}{ts}$

Now we multiply by the number of teaspoons we require:

$\frac{1}{16}\frac{cf}{ts}(4ts)$

Solving we get:

$\frac{1}{4}cf$

This means that 4 teaspoons require 1/4 cup of flour. Another way to see it is that 4 teaspoons are half of 8 teaspoons, therefore they will require half the cups of flour, and half of 1/2 cup of flour are 1/4 cup of flour.