Question

Sebastian bought a package of pens for $3.50 and 4 notebooks. If he spent a total of $10.50, how much did each notebook cost?

Let c = the cost of each notebook.

Answer 1

The cost of each notebook is $1.75

Answer 2

Cost of each notebook = $1.75

Step-by-step explanation:

As we can see in the question, sebastian bought the package of pens for $3.5, so the quantity is only one. Also we know that he bought total of 4 notebooks. Individual price of notebook is what we are required to find. However, we know total which we paid, so assuming the cost of a notebook as a variable, we can form an equation and calculate the cost of 1 notebook.

Let c = the cost of each notebook

Then total cost = $10.5 = $3.5 +
`4 * c`

`4 * c` = $10.5 - $3.5

`4 * c` = $7c = $
`(7)/(4)`c = $1.75

Hence the cost of each notebook = $1.75