Corona virus

Calculate an estimate of the percentage of GDP (Gross Domestic Product) declined due to the quarantine related to the corona COVID-19 virus that lasts for 2 months, during which time the economic activity is down by 80%.

Correct result:

p =  13.3333 %

Solution:

$$\begin{gathered} H=10+2\cdot (1-80\mathrm{/}100)={\displaystyle \frac{52}{5}}=10\frac{2}{5}=10.4 \\ p=100\cdot {\displaystyle \frac{12-H}{12}}=100\cdot {\displaystyle \frac{12-10.4}{12}}={\displaystyle \frac{40}{3}}=13\frac{1}{3}=13.3333\mathrm{\%} \end{gathered}$$

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