Question

The total cost for four pens and seven mechanical pencils is $13.25. The cost for each mechanical pencil is 75 cents. Write and solve an equation that can be used to find the cost of each pen. (Define your variable and show your work)

Answer 1

One pen costs $2

Explanation:

The 7 mechanical pencils costed $5.25, so $13.25 minus $5.25 is $8; and $8 divided by $4 is $2. So each pen costs 2 dollars.

Equation: 4n = 13.25 - 5.25

The variable n stands for the cost of one pen.

I hope this helps! I'm pretty confident in this answer, myself so I think you'll do great!