A banana has 90 calories. This is 5 calories less than one seventh of the calories in a banana split. How many calories are in a banana split? Algebra
Let's represent the number of calories in a banana split as "x".
We know that a banana has 90 calories, which is 5 calories less than one seventh of the calories in a banana split. This can be expressed as: 90 = (x/7) - 5.
Adding 5 to both sides of the equation, we get: 90 + 5 = x/7.
Simplifying, we have: 95 = x/7.
Multiplying both sides of the equation by 7 gives: 665 = x.
Therefore, a banana split has 665 calories. Answer: \boxed{665}.