The Half-Life of an Element Is 15 Minutes

question 29

Multiple Choice

The half-life of an element is 15 minutes. A sample contains 20,000 atoms of the element. How many atoms of the element will remain after 30 minutes?

• A) 2,000
• B) 5,000
• C) 10,000
• D) 2,500
• E) 1,000

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Definitions:

After-tax Profit

The amount of net income left over after all taxes have been deducted from total revenues.

Inventory Turnover

A measure of how many times a company’s inventory is sold and replaced over a period, indicating efficiency in inventory management.

Cash-to-cash Cycle

The time duration it takes for a company to convert its investments in inventory and other resources into cash flows from sales.

Accounts Receivables

Money owed to a company by customers who have purchased goods or services on credit.