Question

. A person weighing 120 pounds has about 20 pints of blood in their body. Which equation below represents the relationship between pints of blood, b, to a person's weight, w?

Answer 1

`w = 6b`

Explanation:

Given

`b = blood`

`w = weight`

`b = 20; when\ w = 120`

Required

Determine the equation that binds both parameters

First, we need to determine the constant of proportionality using:

`w = k * b`

Where k represents the constant.

Substitute 120 for w and 20 for b

`120 = k * 20`

Divide both sides by 20

`6 = k`

`k = 6`

Using the same formula, substitute 6 for k

`w = 6 * b`

`w = 6b`

Hence:

The equation is represented as
`w = 6b`