Discount;
66 * 0.4 = 26.40
66 - 26.4 = 39.60
Tax;
66 * 0.05 = 3.30
Total Price:
39.60 + 3.30 = 42.90
$42.90
4000/4
is equal to your answer
which is 1000.
So we will be using dimensional analysis to solve it as such:

In short, 23,843 kL is 6,291,029.02 (6,291,029 rounded to the whole gallon) gallons.
Well, 12 issues end up as 960 pages total
so... if in 960 pages, 384 are ads, what about 80 pages?
well

solve for "x"
1. Declarative
2. Interrogative
3. Imperative
4. Interrogative
5. Exclamatory? (Not 100% sure)
6. Exclamatory
7. Declarative
8. Imperative
9. Interrogative
10. Declarative