Answer:
$24
Explanation:
you start with $40. 25% of $40 is $10. so you have $30 left. 20% of $30 is $6. so you have $24.
I don't think a correction is necessary. Both parts of the sentence are already in the present tense. Plus, the use of "us" in the beginning of the sentence indicates a personal attachment.
The thesis about the maiden is that she's dead and alone
Nonlinear will best describe a characteristic of postmodern literature
