Answer:
8 markers.
Step-by-step explanation:
Let x be the number of markers in each box. We have been given that Ginger bought 3 boxes of markers, so the number of markers in 3 boxes will be 3x.
After giving 6 markers to her sister now Ginger has 18 markers. We can represent this information in an equation as:
[tex]3x-6=18[/tex]
Now let us solve for x.
Adding 6 to both sides of equation we will get,
[tex]3x-6+6=18+6[/tex]
[tex]3x=24[/tex]
Dividing both sides of our equation by 3 we will get,
[tex]\frac{3x}{3}=\frac{24}{3}[/tex]
[tex]x=\frac{24}{3}[/tex]
[tex]x=8[/tex]
Therefore, there were 8 markers in each box.
