Mark eats an egg sandwich for breakfast and a big burger for lunch every day the egg sandwich has 250 calories if Mark has 5250 calories for breakfast and lunch for the week in total how many calories are in one Big Burger?

In one week (7 days), Mark eats 7 egg sandwiches, which is 1,750 calories. Subtract the total amount of calories he consumed by the number of calories consumed through egg sandwiches; 5,250-1,750=3,500. 3,500 is the total number of calories Mark consumed through eating one Big Burger everyday for 7 days. Divide 3,500 by 7 = 500. There are 500 calories in one Big Burger.