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27 January, 08:20

In the seventh grade, Rachel read 15 books. In eighth grade, she read 18 books. Find the present of increase in the number of books Rachel read

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  1. 27 January, 09:59
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    I'd say what you would do is: You can either 1. Add 15 and 18 together and then divide by 2 OR 2. Since there is a 3 number difference between 15 an 18, just add 3 to 18
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