A pile of books is 54.4 cm high. If each book is 3.2 cm thick, how many books are there in the pile. Also if there are 25 books in the pile find the height of the pile of books.
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height of pile = 54.4cm
thickness of 1 book= 3.2cm
total no. of books in pile = 54.4cm/3.2cm
= 17 books
if no. of books in pile =25
and thickness of books is =3.2cm
then height of the pile =25×3.2cm
= 80cm
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