# Data Interpretation - Bar Charts - Discussion

Discussion Forum : Bar Charts - Bar Chart 2 (Q.No. 1)
Directions to Solve

The bar graph given below shows the foreign exchange reserves of a country (in million US \$) from 1991 - 1992 to 1998 - 1999.

Foreign Exchange Reserves Of a Country. (in million US \$)

1.
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?
2:6
3:4
3:5
4:4
Explanation:

Average foreign exchange reserves over the given period = 3480 million US \$.

The country had reserves above 3480 million US \$ during the years 1992-93, 1996-97 and 1997-98, i.e., for 3 years and below 3480 million US \$ during the years 1991-92, 1993-94, 1994-95, 1995-56 and 1998-99 i.e., for 5 years.

Hence, required ratio = 3 : 5.

Discussion:
17 comments Page 2 of 2.

We have.

(2640+3720+2520+3360+3120+4320+5040+3120) /8=3480.

As per graph 3 country reserves are above ratio (ans is 3).

Now again 5 Country reserves are below average.

Then Ratio between Above avg: Below avg is. 3:5.

Easy method to do average without addition?

Thanks poonam explained in such a easy way.

Average foreign exchange reserves over the given period =

(2640+3720+2520+3360+3120+4320+5040+3120)/8= 3480 million US \$.

The country had reserves above 3480 million US \$ during the years 1992-93, 1996-97 and 1997-98, i.e., for 3 years and below 3480 million US \$ during the years 1991-92, 1993-94, 1994-95, 1995-56 and 1998-99 i.e., for 5 years.

Hence, required ratio = 3 : 5.
(2)