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In this problem 50 is the initial price and the 100% so we can use a rule of 3 to find the 110%
[tex]\begin{gathered} 50\to100 \\ x\to110 \end{gathered}[/tex]So the equation is:
[tex]x=\frac{50\cdot110}{100}=55[/tex]So at the end she will have:
[tex]50+55=105.00[/tex]So is option b