Three people

Three people eat two pizzas altogether. Both pizzas are the same size. One person eats 2/3 of a pizza. A second person eats 1/2 of a pizza. How much pizza does the third person eat?

Correct answer:

c =  5/6

Step-by-step explanation:

$$\begin{gathered} a=\frac{2}{3}\doteq 0.6667 \\ b=\frac{1}{2}=0.5 \\ a+b+c=2 \\ c=2-a-b=2-\frac{2}{3}-\frac{1}{2}=\frac{5}{6}=0.8333 \end{gathered}$$

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