Question

If a 67kg man lost all water in his body, how many kilograms would he have left?

Answer 1

The amount of water in the human body varies slightly depending on several factors, such as whether she drank liquid, juice or ate foods with too much liquid. In addition, through urine and sweat as well as feces, it is possible to lose some of that water.

In addition to these factors, the amount of water varies throughout life. A baby has an amount of water ranging from 75 to 80%. An adult man ranges from 55 to 60% body composed of water, while a woman presents a percentage of 50 to 55%.

As you do not say sex, let's consider the value of 55% water, which is the intermediate between the maximum of the man and the minimum of the woman. With this weight, probably, the individual is an adult human being.

If 55% of the weight is composed of water, after withdrawing it on only 45% (100% - 55% = 45%).

Now let's calculate:

45 x 67 = 3015 = 30.15 kg
100 100

That is, if an adult person of 67 kg lost all the water of the body would be with a weight of approximately 30 kilos and fifteen grams.

Good studies!

Answer 2

An average man's body contains 90℅ water.
Therefore, 90℅ of 67 kg = 0.9 × 67 = 60.3 kg.

The man have left 60.3 kg.