Question

the volume of blood in a persons body is proportional to body weight. a person who weighs 100 pounds has approximately 3 quarts of blood. estimate the number of quarts of blood in a person who weighs 70 pounds. complete the proportion, where the ratios have volumes of blood in the numerators and body weights in the denominators. (do not simplify) $\frac{x}{square}=\frac{square}{square}$ there are approximately $square$ quarts of blood in a person who weighs 70 pounds. (round to two decimal places as needed)

Explanation:

Step1: Set up the proportion

Let $x$ be the volume of blood in quarts for a 70 - pound person. The proportion based on the given information is $\frac{x}{70}=\frac{3}{100}$.

Step2: Solve for $x$

Cross - multiply: $100x = 3\times70$. So, $100x=210$. Then, $x=\frac{210}{100}=2.10$.

Answer:

$2.10$