liv5843
contestada

A bookstore has a bargain table where every book is the same price. In addition, the bookstore gives 20% off every 5th book purchased from the bargain table. Write an expression to represent the total cost of
purchasing 5 books in two different ways.

Respuesta :

Answer:4b + 0.8b AND 4.8b

Step-by-step explanation:

MrRoyal

The expressions that represent the total cost of purchasing 5 books are 4b + 0.8b and 4.8b

Represent the number of books with b.

The cost of 4 books is represented as:

[tex]Cost =4 \times b[/tex]

[tex]Cost =4 b[/tex]

A 20% discount is on the 5th purchase.

So, the cost of the 5th book is represented as:

[tex]Cost = b \times (1 - 20\%)[/tex]

This gives

[tex]Cost = b \times (1 - 0.20)[/tex]

[tex]Cost = b \times 0.8[/tex]

[tex]Cost = 0.8b[/tex]

So, the cost of 5 books is:

[tex]Cost = 4b + 0.8b[/tex]

Add the like terms

[tex]Cost = 4.8b[/tex]

Hence, the expressions that represent the total cost of purchasing 5 books are 4b + 0.8b and 4.8b

Read more about expressions at:

https://brainly.com/question/4344214

Otras preguntas