Amy purchased 17 pencils and 18 pens for a fund-raiser at school and spent $61.50. jocelyn purchased 10 pencils and 21 pens and spent $57. how much does each pencil cost?

Each pencil costs $1.5, and each pen costs $2 Hope this helps

Write a equation system: 17x+18y=61.5
                                         10x+21y=57
Where x is cost per each pencil purchased and y is cost of each pen purchased. So you have to solve this system and get x=1.5 and y=2