You go the grocery store and buy 7 bags of gummy bears and 3 chocolate bars. Your total was $22. Next time you go, you buy 3 bags of gummy bears and 1 chocolate bar for a total of $8. What is the cost of each bag of gummy bears?

This size running track is usually called a 400 meter track. however if a person ran as close to the inside as possible on the track they would run less than 400 meters in one lap. how far away from the inside border would someone have to run to make one lap equal exactly 400 meters