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Study the following bar-diagram carefully and answer the questions. The bar graph given below shows the foreign exchange reserves of a country (in million 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
Total foreign exchange reserves over the period
= 2640 + 3720 + 2520 + 3360 + 3120 + 4320 + 5040 + 3120 = 27840
=> Average foreign exchange reserves = $$\frac{27840}{8}=3480$$
Number of years in which the foreign exchange reserves are above the average reserves = 3 (1992,1996,1997)
Number of years in which the foreign exchange reserves are below the average reserves = 5 (1991,1993,1994,1995,1998)
=> Required ratio = 3 : 5
=> Ans - (C)
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