Total exports of the three Companies X, Y and Z together, during various years are:

In 1993 = Rs. (30 + 80 + 60) crores = Rs. 170 crores.

In 1994 = Rs. (60 + 40 + 90) crores = Rs. 190 crores.

In 1995 = Rs. (40 + 60 + 120) crores = Rs. 220 crores.

In 1996 = Rs. (70 + 60 + 90) crores = Rs. 220 crores.

In 1997 = Rs. (100 + 80 + 60) crores = Rs. 240 crores.

In 1998 = Rs. (50 + 100 + 80) crores = Rs. 230 crores.

In 1999 = Rs. (120 + 140 + 100) crores = Rs. 360 crores.

Clearly, the total exports of the three Companies X, Y and Z together are same during the years 1995 and 1996.

Average annual exports (in Rs. crore) of Company Y during the given period

Average annual exports (in Rs. crore) of Company Z during the given period

=	1	x (60 + 90 + 120 + 90 + 60 + 80 + 100) =		600		.
	7			7

Required percentage =		80	x 100		% 93.33%.
		600 7

The difference between the exports from the Companies X and Y during the various years are:

In 1993 = Rs. (80 - 30) crores = Rs. 50 crores.

In 1994 = Rs. (60 - 40) crores = Rs. 20 crores.

In 1995 = Rs. (60 - 40) crores = Rs. 20 crores.

In 1996 = Rs. (70 - 60) crores = Rs. 10 crores.

In 1997 = Rs. (100 - 80) crores = Rs. 20 crores.

In 1998 = Rs. (100 - 50) crores = Rs. 50 crores.

In 1999 = Rs. (140 - 120) crores = Rs. 20 crores.

Clearly, the difference is minimum in the year 1996.

Average exports of the three Companies X, Y and Z in 1993

= Rs.		1	x (30 + 80 + 60)		crores = Rs.		170		crores.
		3					3

Average exports of the three Companies X, Y and Z in 1998

= Rs.		1	x (50 + 100 + 80)		crores = Rs.		230		crores.
		3					3

Difference	= Rs. 230 - 170 crores 3 3
	= Rs. 60 crores 3
	= Rs. 20 crores.

Average annual exports of Company Z during the given period

= Rs.		600		crores
		7

    = Rs. 85.71 crores.

From the analysis of graph the exports of Company Z are more than the average annual exports of Company Z (i.e., Rs. 85.71 crores) during the years 1994, 1995, 1996 and 1999, i.e., during 4 of the given years.