The bar graph given below shows the foreign exchange reserves of a country (in million US $) from 1991 - 1992 to 1998 - 1999.What was the percentage increase in the foreign exchange reserves in 1997-98 over 1993-94?

 

Foreign exchange reserves in 1997 - 1998 = 5040 million US $.

Foreign exchange reserves in 1993 - 1994 = 2520 million US $.

Then, the increase in foreign exchange resources of 1997-1998 over 1993-1994 = (5040 - 2520) = 2520 million US $.

Hence, the percentage increase in foreign exchange resources of 1997-1998 over 1993-1994= $(\frac{2520}{2520}\times 100)\%=100\%$