### IIFT 2012 Question Paper Question 10

Instructions

Answer the questions on the basis of the table given below Table: Production of Major Minerals and Metals (Million Tonnes)

Question 10

# In which year is the proportion of copper production in the total mineral and metal production the highest?

Solution

The year wise total production of minerals and metals is as shown below:-
2005 = 69+91+71+15+100 = 346
2006 = 75+88+75+18+120 = 376
2007 = 81+97+79+21+102 = 380
2008 = 98+107+88+25+131 = 449
2009 = 93+110+92+24+143 = 462
2010 = 99+116+97+20+154 = 486
2011 = 105+122+103+125+103 = 215
Thus, the proportion of Copper in 2007 = $$\dfrac{79}{360} > 20\%$$
The proportion of Copper in 2008 = $$\dfrac{88}{449} < 20\%$$
The proportion of Copper in 2009 = $$\dfrac{92}{462} < 20\%$$
The proportion of Copper in 2010 = $$\dfrac{97}{486} < 20\%$$
Thus, as we can see the proportion of Copper in 2007 is the highest.
Hence, option A is the correct answer.