Question

Joan had $147 to spend on eight books. After buying them she had $11. How much did each book cost?

Answer 1

Answer:

Each book costs $17

Step-by-step explanation:

Step 1:  Make an expression

147 total -> 147 =  

8 books -> 8x

11 left -> 11

Expression:  147 = 8x + 11

Step 2:  Subtract both sides by 11

147 - 11 = 8x + 11 - 11

136 = 8x

Step 3:  Divide both sides by 8

136 / 8 = 8x / 8

17 = x

Answer:  Each book costs $17

Answer 2

Answer:

$17

Step-by-step explanation:

Books = x

1. Set up an equation.

147 - 8x = 11

2. Solve for x

147 - 8x = 11

-8x = 11 - 147

-8x = -136

x = -136 / (-8)

x = 17

So, each book cost $17.