9 A bookshelf will hold 360 books of thickness 2 cm. How many copies of National Geographic magazine will it hold if each copy is 6 mm thick?

1200

Step-by-step explanation:

The bookshelf can hold 360 books with thickness 2cm, which is equal to 20 mm. Therefore the total space in mm that can be fit into the bookshelf is 360 * 20 = 7200 mm. To find the amount of books with thickness of 6 mm we can fit, we must divide 7200 by 6. The result is 1200

1200 copies of National Geographic magazine will it hold if each copy is 6 mm thick.

Step-by-step explanation:

1 cm = 10 mm

2 cm = 20 mm

if 2 cm holds  360 books

we can also say 20 mm holds 360 books

basic equation thus can be formed:

( 20/6 ) * 360

1200 copies

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