Instructions

Study the table below to answer these questions

The Table shows the quantities of minerals exported from India to six different countries A,B,C,D,E and F(in '000 tonnes) in the year 2010.

Question 90

If due to rise in prices, voume of exports of Gold decreases by 12% while that of Silver decreases by 14%, but due to global rise in car production levels, however, demand for Iron ore increases by 6%, what is the net effect on volume of exports from India

Solution

Volume of gold decreases by 12%,

= 88% of 28 = 24.64

Volume of silver decreases by 14%,

= 86% of 132 = 113.52

Volume of Iron ore increases by 6%,

= 106% of 103 = 109.18

New volume = 109.18 + 149 + 113.52 + 75 + 24.64 = 471.34

Percentage decrease is given by,

= $$\frac{487 - 471.34}{487} \times 100$$

= $$\frac{15.66}{487} \times 100$$

= $$3.2$$%

Hence, option D is the correct answer.

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