Answer:320
Explanation:
20 days times 13 pages= 260pages
10 days times 6 pages = 60pages
Total for the 30 days:
260+60= 320 pages total
4(c-d) is the answer bc the difference of (c-d) is done first, then multiplied by 4
The answer is 2 if your dividing if not comment me and ill answer it