The energy saving from recycling one glass bottle will power the oven for 7.5 minutes. glass used for recycling costs 5p per kg. a glass bottle weighs 500 grams how much would the recycled glass cost to power the oven for 6 hours

Okay, it's 24p.
1. Let's find out how many bottles will it take to power the oven for 6 hours.
6x60 will be 360 (minutes). Then we divide 360 by 7.5. Move the decimal to the right on both sides. 3600 divided by 75. It's 48 bottles for 6 hours.
2. 1 kg=1000 g. 1 bottle is 500 g. 48 divided by 2. 24p.

I hope that was helpful. Have a great day.

The first one minimumi hope my answer you.