Petra

Petra has 2 2/5 of a bag full of cat premium food. Her cat eats 2/95 of a pack per day.
How many weeks does food last if a cat eats the same amount of food every day?

Correct result:

n =  16.2857

Solution:

$$\begin{gathered} m=2{\displaystyle \frac{2}{5}}={\displaystyle \frac{2\cdot 5+2}{5}}={\displaystyle \frac{12}{5}}=2.4 \\ {m}_1=7\cdot {\displaystyle \frac{2}{95}}={\displaystyle \frac{14}{95}}\doteq 0.1474 \\ n=m\mathrm{/}{m}_1=2.4\mathrm{/}0.1474={\displaystyle \frac{114}{7}}=16\frac{2}{7}=16.2857 \end{gathered}$$

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