A Set of Twins,Andrea and Courtney,are Initially 10 Years Old

question 46

Multiple Choice

A set of twins,Andrea and Courtney,are initially 10 years old.While Courtney remains on Earth,Andrea rides on a spaceship which travels away from Earth at a speed of 0.60c for five years (as measured by Courtney) ,then immediately turns around and comes back at 0.60c.When Andrea returns,Courtney is 20 years old.How old is Andrea upon her return?

• A) 10 y
• B) 12 y
• C) 15 y
• D) 18 y
• E) 20 y

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Definitions:

Plan Balance

The total current value of an individual's account in a retirement plan, reflecting contributions, investment gains or losses, and withdrawals made over time.

Simplified Employee Pension

A Simplified Employee Pension (SEP) is a retirement plan that allows employers to make contributions to the retirement accounts of their employees, simplifying the process for small businesses.

Annual Contribution

The amount of money an individual contributes to a retirement, investment, or savings account within a single fiscal year.

Age 50

A reference to individuals who are fifty years old, often used in contexts that involve age-specific criteria or considerations, such as retirement planning or age-based discounts.