The ¹⁴C Activity of Some Ancient Peruvian Corn Was Found

question 30

Multiple Choice

The ¹⁴C activity of some ancient Peruvian corn was found to be 10 disintegrations per minute per gram of carbon. If present-day plant life shows 15 dpm/g, how old is the Peruvian corn? (The half-life of ¹⁴C is 5730 yr.)

• A) 1460 yr
• B) 1910 yr
• C) 3350 yr
• D) 3820 yr
• E) 9080 yr

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Definitions:

Net Exchange Gain

The profit from exchanging one currency for another after accounting for currency fluctuations and transaction costs.

Forward Contract

A tailor-made agreement between two entities to purchase or sell a specific asset at a predetermined price on a future date.

Forward Contract

A financial contract between two parties to buy or sell an asset at a specified future time at a price agreed upon today, not traded on an exchange.

Exchange Gain

A profit resulting from foreign currency transactions when the value of the currency received is higher than the value of the currency exchanged at the transaction rate.