Question : Directions: Study the following bar diagram carefully and answer the questions. The bar graph given below shows the foreign exchange reserves of a country (in millions US $) from 1991-1992 to 1998-1999.
The ratio of the number of years, in which the foreign exchange reserves are above the average reserves, to those in which the reserves are below the average reserves is:
Option 1: 2 : 6
Option 2: 3 : 4
Option 3: 3 : 5
Option 4: 4 : 4
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Correct Answer: 3 : 5
Solution :
Average of the foreign exchange reserves of a country (in millions USD) from 1991-1992 to 1998-1999 is: $=\frac{2640+3720+2520+3360+3120+4320+5040+3120}{8}$
= 3480
The number of years in which the reserves are above the average reserves = 3
The number of years in which the reserves are below the average reserves = 5
So, the ratio of above and below the average = 3 : 5
Hence, the correct answer is 3 : 5.
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