Answer:
$120
Step-by-step explanation:
Let the cost of the dress be "c"
ONE HALF the cost DECREASED by 12, can be written as:
[tex]\frac{1}{2}c-12[/tex]
2/5th the cost of dress, can be written as:
[tex]\frac{2}{5}c[/tex]
Now, we equate both parts and solve for c to get cost of dress. Shown below:
[tex]\frac{1}{2}c-12=\frac{2}{5}c\\\frac{1}{2}c-\frac{2}{5}c=12\\\frac{5-4}{10}c=12\\\frac{1}{10}c=12\\c=\frac{12}{\frac{1}{10}}\\c=12*10\\c=120[/tex]
Thus,
The ccost of the dress is $120
