Question

Vicki puts 10 books on a shelf. The 10 books take up 28 cm. What is the mean (average) thickness of her books? Can I have it worked out as well plz? I really need to understand it.

Answer 1

If the ten books are 28cm thick then the average thickness is 28 (the total thickness) divided by 10 (the number of books).

28cm divided by 10 is 2.8cm.

So the average thickness is 2.8cm!

Answer 2

Average thickness of book = Total thickness/mo. of books
= 28 cm/ 10
= 2.8 cm
Thus, on average, each book has 2.8 cm thickness.