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Mathematics, 21.08.2019 05:00 keshan3000

Vicki puts 10 books on a shelf.
the 10 books take up 28 centimeters.
what is the mean (average) thickness of her books?
= 2.8 cm
the shelf is 120 centimeters long.
vicki fills the shelf with a mixture of books like the first ten books.
estimate how many books she can get on the 120 cm shelf.
show your working out.
thanx

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