Pizza

Three siblings ordered one pizza. Misha ate a quarter of the whole pizza. Helen ate a third of the rest, and Patrick ate half of what Helen had left. They had the rest packed up. How much of the pizza did they pack? Write the result as a fraction.

Final Answer:

x =  1/4

Step-by-step explanation:

$$\begin{gathered} a=1-1/4=\frac{3}{4}=0.75 \\ b=a-a/3=0.75-0.75/3=\frac{1}{2}=0.5 \\ c=b-b/2=0.5-0.5/2=\frac{1}{4}=0.25 \\ x=c=0.25=\frac{1}{4} \end{gathered}$$

Try another example