Question

The volume of a Harry Potter book is 3600 cu cm. The length, breadth, and thickness of each page are 20 cm, 10 cm, and 0.006 cm, respectively. On an average, if each paper costs Rs. 0.50, then the price of the book is __________.

Answer 1

Volume of each page `=20xx10xx0.006=1.2cm^(2)`
Number of pages of book
`=("Volume of the book")/("Volume of each page")=(3600)/(1.2)=3000`
`therefore"Price of the book"=3000xx0.50="Rs."1500`