The average production of 1996 and 1997 was exactly equal to the average production of which of the following pair of the years ?

Answer: Option D

Explanation:

Average production of 1996 and 1997 (in 10000 tonnes) was
\begin{aligned}
\frac{40+60}{2} = 50 \\
\text{Now for other given years it was }\\
a. \text{for 1999 and 2000 =} \frac{65+50}{2} \\
= 57.5 \\

b. \text{for 2000 and 2001 =} \frac{50+75}{2} \\
= 62.5 \\

c. \text{for 1995 and 1999 =} \frac{25+65}{2} \\
= 45 \\

d. \text{for 1995 and 2001 =} \frac{25+75}{2} \\
= 50 \\

\end{aligned}

So it is equal to the year 1995 and 2001