# Blood

In human body the blood is about 7.3% body weight. How many kilograms of blood is in the human body with weight 109 kg?

Result

x =  7.957 kg

#### Solution:

$m=109 \ \text{kg} \ \\ \ \\ x=m \cdot \ \dfrac{ 7.3 }{ 100 }=109 \cdot \ \dfrac{ 7.3 }{ 100 }=7.957 \ \text{kg}$

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