math homework help

Question

Cody goes to a fast food restaurant and orders some tacos and burritos. He sees on the nutrition menu that tacos are  calories and burritos are calories.  If he ordered  items and consumed a total of  calories, how many tacos and how many burritos did Cody order and eat?

Answer 1

t+b=9

160t+450b = 2890

16t +45b = 289

16t +16b =16(9)= 144

29b = 289-144 = 145

b = 145/29 = 5 burritos

t = 9-5 = 4 tacos

160(4)+450(5) = 640+2250 = 2890 calories