by Guest » Thu Mar 16, 2017 2:04 am
Suppose Kathy has x money.
1/2 x or x/2 are spent on groceries.
[tex]\frac{1}{4}\cdot \frac{x}{2}[/tex] she spends to by gas.
And we know that she left with \$5
[tex]x - \frac{x}{2} - \frac{1}{4} \cdot \frac{x}{2} = 5[/tex]
Is it clear?