Use the Following Information to Answer the Questions
a Radioactive $H_{p}$

question 84

Multiple Choice

Use the following information to answer the Questions
A radioactive element used in medicine has a physical half-life $H_{p}$
(the time in which half of any quantity of the element decays) and a biological half-life $H _ { b }$ (the time in which half of an amount of this element in the body is excreted) . The effective half-life $H _ { e }$ is calculated from $\frac { 1 } { H _ { e } } = \frac { 1 } { H _ { p } } + \frac { 1 } { H _ { b } } .$
-The physical half-life of iron-59 is 45 days and its biological half-life is 600 days. Find the effective half-life of iron-59.

• A) 40.4 days
• B) 41.9 days
• C) 322.5 days
• D) 645 days

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Definitions:

Variable Costing

An accounting method that only allocates variable costs to inventory, treating fixed costs as expenses of the period.

Absorption Costing

A method of costing that includes all manufacturing costs - direct materials, direct labor, and both variable and fixed manufacturing overhead - in the cost of a product.

Operating Income

Operating income is the profit realized from a company's regular business operations, excluding deductions of interest and taxes, as well as any gains or losses from non-operating activities.

Direct Costing

A cost accounting method where only variable costs (direct materials, direct labor, variable manufacturing overhead) are included in product costs, fixed overhead costs are expensed in the period they are incurred.