Water in body

Water in the human organism of all the compounds represented, constitutes about 3/5 of the total weight. How many kilograms of water is in your body when you weigh 51 kg?

Correct answer:

x =  30.6 kg

Step-by-step explanation:

$$\begin{gathered} m_1=51\text{ kg } \\ q={\displaystyle \frac{3}{5}}=0.6 \\ x=q\cdot m_1=0.6\cdot 51={\displaystyle \frac{153}{5}}={\displaystyle \frac{153}{5}}\text{ kg}=30.6\text{ kg} \end{gathered}$$

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