Question

At McDonald’s four cheeseburgers and three medium fries have a total of 2290 cal. Six cheeseburgers and two medium fries have 2560 cal. How many calories does each item contain

Answer 1

4c + 3f = 2290
6c + 2f = 2560

first times 2: 8c + 6f = 4580
2nd times 3: 18c + 6f = 7680
subtract ....
10c = 3100
c = 310
sub c = 310 into the 1st to get f

let me know what you get