Question

Suppose a book has 100 names listed in each column, with 5 columns per page. The book has 200 pages.
How many books are needed to list all the people in a population of 200 million?

Answer 1

200 Books are required.

Step-by-step explanation:

Each book can hold 100,000 names.

200,000,000/100,000=2000

Therefore, 2000 books are required.

Answer 2

Given :

A book has 100 names listed in each column with 5 columns per page . The book has 200 pages

To Find :

No.of.Books required to list all the people in a population of 200 million.

here, 200 million = 20,00,00,000

Solution :

No.of.names in one page

= 100 x 5

= 500 names in one page.

No.of.Names listed in one book

= 500 x 200

= 100,000

then,

No.of.books required to list 200 million peoples name

$\rm⇢ \: \: \frac{200000000}{100000}$

$\rm⇢ \: \:2000 \: \: books \: \: reqiured$

FINAL ANSWER :

2000 Books are Required to list a population of 200 million