Chapter 24, Problem 40R

To determine

To explain: The reason for choosing a 10-karat gold over a 20-karat gold and for choosing a 20-karat gold over a 10-karat gold.

Explanation of Solution

Introduction:

Gold jewelries are made by combining gold with copper.

A 10-karat gold contains a higher percentage of copper and lower percentage of gold than a 20-karat gold. If looking for an expensive and a purer quality gold ring, the 20-karat gold ring is preferred as it has a greater amount of gold when compared to the 10-karat gold ring. When looking for a cheaper ring, the 10-karat gold ring is preferred as it contains lesser amount of gold when compared to the 20-karat gold ring.

Conclusion:

A 20-karat gold ring is preferred when looking for an expensive ring and a 10-karat gold ring is preferred when looking for a less expensive ring.