He bought a package of pencils for $2.99 and some erasers that cost $0.33 each. The total amount she paid for these items is $4.97.
total cost of pencil = $2.99
cost of each eraser = $0.33
Total cost of items = $4.97
let
the number of eraser = x
The equation can be represented below
[tex]\begin{gathered} 4.97=2.99+0.33x \\ 4.97-2.99=0.33x \\ 1.98=0.33x \\ x=\frac{1.98}{0.33} \\ x=6 \end{gathered}[/tex]She bought 6 eraser altogether.
