Suppose the world demand for iron is about 420,000,000 tons per year. The known global reserves are 100,000,000,000 tons. What is the static reserve for iron?
A) 93.3
B) 128.4
C) 238.1
D) 420.0

Question

Quizplus · Accepted Answer

To find the static reserve for iron, we divide the known global reserves by the annual demand:

Static reserve = Known global reserves / Annual demand
Static reserve = 100,000,000,000 / 420,000,000 
Static reserve ≈ 238.1

Therefore, the static reserve for iron is approximately 238.1 years. The answer is C.

Suppose the World Demand for Iron Is About 420,000,000 Tons