Irene is going to read a 216-page book. if she reads at a rate of 18 pages per day, how many days will it take her to read 13 of the book?

1 and 2

step-by-step explanation:

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

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