Step 1:
Given data
Let c represent the number of comic books with which she begin.
When sh sold half of her comic books
Then, she will be left with
[tex]\frac{c}{2}\text{ comic books}[/tex]When she bought 15 more, she now has 30.
15 more, mean you add 15 to c/2 then equate it to 30.
Next, write an equation.
[tex]\frac{c}{2}\text{ + 15 = 30}[/tex]Step 2:
Solve the linear equation to find the value of c.
[tex]\begin{gathered} \frac{c}{2}\text{ + 15 = 30} \\ \text{Collect like terms} \\ \frac{c}{2}\text{ = 30 - 15} \\ \frac{c}{2}\text{ = 15} \\ \text{cross multiply} \\ c\text{ = 15 }\times\text{ 2} \\ c\text{ = 30} \end{gathered}[/tex]Step 3:
Final answer
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