Question

I need help figuring out what concepts to apply to this question:

Sara, who weighs 66.0 kg, enjoys a 538-Calorie (538 kcal) breakfast of pancakes loaded with fruits, cream, and syrup. She wishes to maintain her weight, so she decides to work out before going to her fitness group's weekly meeting. If the height of a single stair is 12.0 cm, and her body is only 33% efficient in converting chemical energy to mechanical energy, determine the number of stairs Sara must climb to cancel out the Calories consumed.

Answer 1