Answer: [tex]\$14[/tex]
Step-by-step explanation:
Let be "x" the price in dollars of the more expensive scarf and "y" the price in dollars of the other scarf that was cheapier.
Set up a system of equations:
[tex]\left \{ {{x+y=25} \atop {x=y+3}} \right.[/tex]
Applying the Substitution method, you must substitute the second equation into the first equation and then solve for "y":
[tex](y+3)+y=25\\\\2y=25-3\\\\y=\frac{22}{2}\\\\y=11[/tex]
Finally, susbtitute this value into the second equation in order to find "x":
[tex]x=11+3\\\\x=14[/tex]