This year, the class plans to collect only one material and use the money earned to pay the total cost for the field trip for the 30 students. The amount of money earned from recycling this year is different from last
year. .
• Cost per 1 pound of aluminum has decreased by 2 cents
• Cost per 1 pound of glass has increased by 3 cents
Select either aluminum or glass and determine how many pounds the class
needs to collect and recycle to pay for the field trip. Explain how you found
your answer.