Rare earth metals are widely used in a variety of important products (Case Study, p XXXXXXXXXXAccording to the U.S. Geological Survey, China has about 42% of the world’s reserves of rare earth metals....

Rare earth metals are widely used in a variety of important products (Case Study, p. 362). According to the U.S. Geological Survey, China has about 42% of the world’s reserves of rare earth metals. Use this information to answer the following questions.

In 2014 China had 55 million metric tons of rare earth metals in its reserves and produced 95,000 metric tons of these metals. At this rate of production, how long will China’s rare earth reserves last?