Răspuns:
Explicație:
[tex]\bf 4\% = \dfrac{4}{100}[/tex]
[tex]\red{\boxed{\bf ~c = \dfrac{md}{ms}\cdot100~ } }[/tex]
[tex]\bf \dfrac{4}{100} =\dfrac{md}{160} \cdot100[/tex]
[tex]\bf \dfrac{4}{100} =\dfrac{100md}{160} \implies 100 \cdot 100~md=4 \cdot 160[/tex]
[tex]\bf md=\dfrac{\not4 \cdot 16\not0}{\not100 \cdot 10\not0} \implies md= \dfrac{1 \cdot 16}{25 \cdot 10}[/tex]
[tex]\pink{\bf \underline{md=0,064}}[/tex]
