The volume of blood in a person's body is proportional to body weight. A person who weighs 140 pounds has approximately 4 quarts of blood. Estimate the number of quarts of blood in a person who weighs 100 pounds.
To estimate the number of quarts of blood in a person who weighs 100 pounds, we can set up a proportion:
140 pounds is to 4 quarts as 100 pounds is to x quarts
(140 pounds / 4 quarts) = (100 pounds / x quarts)
Solving for x, we get:
x = (100 pounds * 4 quarts) / 140 pounds
x = 400/140
x = 2.857
Therefore, a person who weighs 100 pounds would have approximately 2.857 quarts of blood.