The traditional method of measuring a person\\\'s body-fat ratio is to weigh the

Question

The traditional method of measuring a person's body-fat ratio is to weigh them on dry land and then weigh them while submerged in water. The body-fat ratio can be calculated using the difference in these weight measurements. Unfortunately, this method requires that the person become submerged in water, which is a problem for those suffering from hydrophobia (fear of water). As an angel investor, you give money to companies that you think have highly marketable products or services in exchange for partial ownership of the company. A company has mailed a proposal to you seeking money to market a new device for measuring a person's body-fat ratio with no need for the person to get wet.

Explanation / Answer

Let the weight of the person in dry air be w1;

when immersed in water let it be w2;

body fat ration = diffrenec in weight in dry and when immeresed in water.

= w1-w2;

now let d1 be the density of person in dry land and dw be density of water;

w1= d1 * V *g;

w2 = (d1-d2) * V *g;

V is the volume of person;

body to weight ratio = [d1 -(d1-d2)]*V*g;

Aletrnative method for measurement:

The" skin Fold" method measures your body fat percentage by pinching your fat with your fingers then measuring the thickness with a body fat caliper. The reading is given in millimeters, which you compare to a chart with age and gender to arrive at your body fat percentage. There are many different types of caliper tests, which range from only one site like with the Accumeasure Body Fat Caliper to a 7 site Jackson Pollack Method (some are as high as 12 sites).

Upside

Downside

Bottom Line
Skin Fold is hands down the most effective, accurate, practical method to measure and track your body fat percentage. The self-administered Accumeasure Body Fat Caliper retails for under $10 and is sufficient for most people.

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