Castor and Pollux, Identical Twins, Get into Their Individual Spaceships

question 39

Multiple Choice

Castor and Pollux, identical twins, get into their individual spaceships and blast off simultaneously. Castor's is the faster ship, and both return to Earth simultaneously. Which of the following statements is true?

• A) Castor is older only if he traveled in the same direction as Pollux.
• B) Castor is older only if he traveled in the opposite direction to Pollux.
• C) Pollux is older only if he traveled in the same direction as Castor.
• D) Pollux is older only if he traveled in the opposite direction to Castor.
• E) Pollux is older.

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Definitions:

Price Ceiling

A legally established maximum price that can be charged for a good or service, aimed at preventing prices from becoming too high.

Supply Curve

A graphical representation showing the relationship between the price of a good and the quantity of the good that producers are willing to supply.

Quantity

The amount or number of a material or product which is available, produced, or consumed.

Price Floor

A government- or authority-imposed minimum price that can be charged for a good or service, intended to prevent prices from falling too low.