Question

Mr. Thomas is making rice. One cup of rice requires 1/3 of a cup of water. He is making 2 1/2 cups of rice. How much water will he need?

Answer 1

Knowing that each cup requires $\frac{1}{3}$ cup of water, and you need to know how many cups of water will the 2.5 cups of rice require;
*See the image*
So, the answer is; $\frac{5}{6}$ cups of water.

Hope this helps!