The body Mass index (BMI) is a measure of an individuals body size and is calculated with the following formula. BMI = Mass/(height)^2. Or B = m/h^2 (mass in kg and height in m) . Healthy individuals should have a BMI between 18.5 and 25. A BMI below or above this range indicates an underweight or overweight person.

a) Calculate the BMI of a person with a mass of 75 kg and a height of 1.80 m. b) What is the minimum weight required of a person 1.60 m tall to remain in the healthy BMI range? c) How tall is a person with a BMI of 24 and a mass of 90 kg