Question

At a book sale, 5 books cost $15.

a. What is the cost of each book?
b. At this rate, how many books can you buy for $21?

Answer 1

A 3 $

B. 7books.

Explanation:

A 3 dollar , because 15 divided 5 is 3. 3 dollars x 5 books is 15$

B. 7 books because 3 dollars is the unit price. so 3 time 7 is 21 dollars . Hope this helped