Answer:
$11.98
Explanation:
Start by finding the 60% of $29.95.
Let x represent the discount (in dollars). We can use this to set up an equation:

Note that percentages can also be written as fractions. An easy way to convert a percentage to a fraction is breaking down the word percent. Per means "per/for every [blank]" and cent means "one hundred/100". When converting percentages to fractions, we can simply put the percentage over 100.
Therefore...

Reduce the fraction:

Now, we subtract $17.97 from $29.95 to get...

It costs $11.98 now.