Question

Tina read 20% of her textbook this week. If Tina read 9 pages, how many pages, total, are in hertextbook?

Answer 1

Answer:

45 pages

Explanation:

The total number of pages in her textbook is equivalent to 100% of her textbook. So, using the ratio that 20% are 9 pages, we can find the 100% as follows

$100\times\frac{9}{20}=\frac{100\times9}{20}=\frac{900}{20}=45$

Therefore, her textbook has 45 pages in total.