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Caleb  is reading a book that is 90 pages long. He read 4/5 of the book on Sunday and 1/2 of the remainder on Tuesday. How many pages did Caleb have left to read?

 May 13, 2021
edited by jiejxu  May 13, 2021
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He read 4/5 so there is 1/5 remaining    1/5 * 90 = 18         read half of this , then half of this remains = 9 pages left to read

 May 13, 2021

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