We have to divide 2 1/2 by 1/3. To do this, first, we need to convert the mixed number into a fraction, as follows:
[tex]2\frac{1}{2}=\frac{2\cdot2+1}{2}=\frac{5}{2}[/tex]Dividing by a fraction is equivalent to multiplying by its inverse, then 5/2 divided by 1/3 is the same as 5/2 multiplied by 3.
[tex]\frac{2\frac{1}{2}}{\frac{1}{3}}=\frac{\frac{5}{2}}{\frac{1}{3}}=\frac{5}{2}\cdot3=\frac{15}{2}=7\frac{1}{2}[/tex]She will have 7 gift boxes and some cookies leftover
