From health tips to tech hacks, find it all on IDNLearn.com. Find the answers you need quickly and accurately with help from our knowledgeable and experienced experts.

Vicki puts 10 books on a shelf.
The 10 books take up 28 centimeters.
What is the mean (average) thickness of her books?
= 2.8 cm
The shelf is 120 centimeters long.
Vicki fills the shelf with a mixture of books like the first ten books.
Estimate how many books she can get on the 120 cm shelf.
Please show your working out.
Thanx


Sagot :

[tex] the\ mean\ hickness\ of\ Vicki's\ books= \frac{28\ cm}{10} =2.8\ cm\\\\28\ cm\ \rightarrow\ 10\ boocks\\120\ cm\ \rightarrow\ x\\\\x= \frac{120\cdot 10}{28} \approx42.9\\\\Ans.\ Vicki\ can\ put\ 42\ books.[/tex]