Explicație:
[tex] \bf m_{d} = 30 \: g[/tex]
[tex] \bf m_{apa} = 270 \: g[/tex]
[tex] \bf c = \: ?[/tex]
[tex] \red{ \boxed{ \bf m_{s} = m_{d} + m_{apa}}}[/tex]
[tex]\red{ \boxed{ \: \bf c = \dfrac{m_{d}} {m_{s}} \cdot 100 \: }}[/tex]
[tex]\bf m_{s} = 30 \: g + 270 \: g\implies \underline{m_{s} =300 \: g}[/tex]
[tex] \bf c = \dfrac{ \not30} { \not30 \not0} \cdot 10 \not0 \implies \purple{ \underline{c = 10\%}}[/tex]
