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?


x =  7.957 kg


m=109 kg  x=m 7.3100=109 7.3100=7.957 kgm=109 \ \text{kg} \ \\ \ \\ x=m \cdot \ \dfrac{ 7.3 }{ 100 }=109 \cdot \ \dfrac{ 7.3 }{ 100 }=7.957 \ \text{kg}

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