Question

Gabriel is buying pens and notebooks for school. Pens cost $1.50 each, and notebooks cost $3.00 each. She buys a total of 15 items and spends $30.

Write an equation to represent this scenario.

Answer 1

Equation are:

`\sf p + n = 15 \\ 1.5p + 3n = 30`

Explanation:

Let p be the number of pens and n be the number of notebooks Gabriel buys. We know that the total number of items she buys is 15 and the total amount she spends is $30. We can represent this information in the following system of equations:

`\sf p + n = 15 \\ 1.5p + 3n = 30`

The first equation tells us that the total number of pens and notebooks Gabriel buys is 15. The second equation tells us that the total amount of money she spends is $30.