During the first game they sold 55 candy bars and 110 bags of chips and made $165. During the second game they sold 90 candy bars and 65 bags of chips and made $172.25

Answer 1

55x + 110y = 165

90x + 65y = 172.25

divides 1st equation by 55 and the second equation by 5:

x + 2y = 3 --> x = 3 - 2y

18x + 13y = 34.45

18 (3 - 2y) + 13y = 34.45

54 - 36y + 13y = 34.45

-23y = -19.95

y = 0.85

x = 3 - 2* 0.85 = 3 - 1.70 = 1.30

candy bar costs $1.30 and bag of chips cost 0.85;

yes it checks