The "Rule of 72" States That Invested Money Doubles in Value

question 1

Multiple Choice

The "rule of 72" states that invested money doubles in value if the product of the interest rate (in percentage form) and time invested (in years) equals 72. Assuming continuous compounding, at least what must the product be for money to triple?

• A) 90
• B) 100
• C) 110
• D) 120

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Definitions:

Electroconvulsive Therapy

A medical treatment involving electric currents passed through the brain to trigger brief seizures, aiming to treat severe depression and other mental health conditions.

Selective Serotonin Reuptake Inhibitors (SSRIs)

A class of drugs often prescribed to treat depression and anxiety by increasing the levels of serotonin in the brain.

Antidepressants

A group of drugs designed to alter brain chemistry to improve mood and relieve symptoms of depression, often by balancing neurotransmitter levels.

Serotonin

A neurotransmitter associated with mood regulation, sleep, and several other bodily functions.