Question

7. The height of a pile of books one over the other is 15 3/5. If each book is 1 1/5cm thick, how many books make up the pile?​

Answer 1

Height of a book = 1 1/5 cm = 6/5 cm

Total height of a pile made of books = 15 3/5 cm = 78/5 cm

Number of books in a 78/5 cm height's pile =

$\frac{78}{5} \div \frac{6}{5} \\ = 13$

Numbers of Book are 13 .