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20 January, 18:11

Rock can read 10 books in 30 minutes. how long does it take rock to read 15 books, if the speed is consistant.

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Answers (2)
  1. 20 January, 18:54
    0
    10book=30mins

    divide 10

    1book=3mins

    time = (time to read 1 book) times (number of books)

    time to read 1 book=3 mins

    15 books

    15 books=15 times 3mins

    15books=45mins

    45 mins
  2. 20 January, 20:31
    0
    45 since 30/10=3 so he reads one book in 3 minutes, Therefore, 15 x 3=45
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