Let's assume money in Josie's purse to begin with as 'x'
There are 18 markers
Each marker cost $1.20
so, we can find total cost of markers
Total cost of markers = ( total number of markers)*(price of each marker)
so, we can plug value
Total cost of markers is
[tex]=18\times 1.20[/tex]
[tex]=21.6[/tex]$
now, we are given
Josie spent 4/7 of the money in her purse on some books
the rest of the money on 18 markers
so, rest money is
[tex]=x-\frac{4}{7} x[/tex]
[tex]=\frac{3}{7} x[/tex]
and this rest money is total cost of markers
so, we can set them equal and then we can solve for x
[tex]\frac{3}{7} x=21.6[/tex]
[tex]7\cdot \frac{3}{7}x=21.6\cdot \:7[/tex]
[tex]3x=151.2[/tex]
[tex]x=50.4[/tex]
So, total money in Josie's purse in beginning is $50.4..........Answer
