Step-by-step explanation:
CP=500
SP=550
Profit and profit%
We know that
[tex]\boxed{\sf Profit=SP-CP}[/tex]
[tex]\\ \tt{:}\leadsto Profit=550-500[/tex]
[tex]\\ \tt{:}\leadsto Profit=Rs.50[/tex]
[tex]\boxed{\sf Profit\%=\dfrac{Profit}{CP}\times 100}[/tex]
[tex]\\ \tt{:}\leadsto Profit\%=\dfrac{50}{500}\times{100}[/tex]
[tex]\\ \tt{:}\leadsto Profit\%=\dfrac{50}{5}[/tex]
[tex]\\ \tt{:}\leadsto Profit\%=10\%[/tex]
[tex]\sf Key\:notes\begin{cases}\sf\mapsto CP=cost\: price \\ \sf \mapsto SP=Sold\:price\end{cases}[/tex]