Respuesta :
Answer:
(a) 15:8
(b) 7:15
Step-by-step explanation:
a: All the books together is 15. The ratio of all books(15) to used books(8) is therefore 15:8
b: As I said above, all the books together is 15. So the ratio of the new books(7) to all books(15) is 7:15
The ratio of all books to used books 15:8
The ratio of new books to all books 7:15
What is ratio?
A ratio indicates how many times one number contains another.
Given:
New books =7
used books= 8
total books =8+7=15 books
a) ratio of all books to used books,
= total books: used books
= 15:8
b) ratio of new books to all books,
= new books: all books
=7:15
Learn more about ratio here:
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