Johnny 2

Johnny spends 1/2 of his salary on his family, 1/6 on personal expenses, and 1/9 on convenience, and he saves the rest.
What fraction of his salary does he have?
How much money does he save from his salary of $180?

Correct answer:

s =  2/9
s₂ =  40 USD

Step-by-step explanation:

$s=1-\frac{1}{2}-\frac{1}{6}-\frac{1}{9}=\frac{2}{9}=0.2222$

$$\begin{gathered} a=180\text{USD} \\ {s}_2=a\cdot s=180\cdot \frac{2}{9}=\frac{180\cdot 2}{9}=\frac{360}{9}=40\text{USD} \end{gathered}$$

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