Question

The total cost of four pens and seven mechanical pencils is $13.25. The cost of each pencil is 75 cents. Using an arithmetic approach, find the cost of a pen.​

Answer 1

Answer:

One pen costs $2

Step-by-step 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.