Calculating the good weight range

Now lets calculate our BMI or body mass index.

Lets say Sandra is 1.60 meters tall and weighs 70 kilos.

1.60 x 1.60 = 2.56

70 ÷ 2.56 = 27.34

Sandra's BMI is 27.34

From the BMI chart given below, you can see that Sandra is overweight.

Normal BMI is between 18.5 and 25.

BMI - CHART
Severely underweight
less than 16.0

Underweight
from 16.0 to 18.5

Normal
from 18.5 to 25

Overweight
from 25 to 30

Obese Class I
from 30 to 35

Obese Class II
from 35 to 40

Obese Class III
over 40

So what is the ideal weight range for Sandra?
18.5 x 2.56 = 47.36 Kg
25 x 2.56 = 64 Kg

The ideal weight range for Sandra is between 47.36 and 64 kilos.

referred source: Wikipedia
http://en.wikipedia.org/wiki/Body_mass_index