Question

A bookcase has a mass of 20 kilograms. A book in the bookcase has a mass of 500 grams.

How many books of the same mass would it take to equal the mass of the bookcase?
Enter your answer in the box

Answer 1

40

Explanation:

.5kg*40=20kg

40 books

Answer 2

40 books

Explanation:

Divide 20 kg by 500 g, or, alternatively, divide 20 kg by 0.5 kg.

Either way, the result is 20/0.5, or 40.

40 books of the same mass would have the same mass as the bookcase.

Hope this helps :)