Question

Trei fermieri A B C utilizează serviciul deservire la domiciliu​

Answer 1

T-5%×T=95%×T

$\frac{95}{100}\times \left(\begin{array}{cccc}2&3&6&3\\1&2&3&5\\3&4&2&3\end{array}\right)=\frac{19}{20} \times \left(\begin{array}{cccc}2&3&6&3\\1&2&3&5\\3&4&2&3\end{array}\right)= \left(\begin{array}{cccc}\frac{19}{10} &\frac{57}{20} &\frac{57}{10} &\frac{57}{20} \\\\\frac{19}{20} &\frac{19}{10} &\frac{57}{20} &\frac{19}{4}\\ \\\frac{57}{20} &\frac{19}{5} &\frac{19}{10} &\frac{57}{20} \end{array}\right)$