At Burger Queen, four cheeseburgers and three medium fries have a total of 2290 calories. Six cheeseburgers and two medium fries have 2560 calories. How many calories does a cheeseburger have?

1 Answer
Lucy
Jul 3, 2018

Cheeseburgers have 310 calories

Explanation:

Let #C# be cheeseburgers and #F# be fries

#4C+3F=2290# --- (1)
#6C+2F=2560# --- (2)

From (2)
#6C+2F=2560#
#3C+F=1280#
#9C+3F=3840# --- (3)

(3) - (1)
#5C=1550#
#C=310#

Therefore, cheeseburgers have 310 calories

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