12. Determine the sales of the grains over the period

 

Two farmers Kishore and Shanthi, cultivates three varieties of grains namely rice, wheat and ragi. If the sale amount (in \(₹\)) of three varieties of grains by both farmers in June.

 

\(A =\begin{bmatrix}
700 & 1200 & 2200\\
750 & 1450 & 2250
\end{bmatrix}\)

 

[Note: Here, the rows \(R_1\) and \(R_2\) represent the two farmers, Kishore and Shanthi, respectively. And the columns \(C_1\), \(C_2\) and \(C_3\) denote grains rice, wheat and ragi, respectively.]

 

And the July month sale (in \(₹\)) is exactly twice that of the June month sale for each variety.

 

i) What is the price of the grains in the July month \(=\) $\left[\begin{array}{lll}i& i& i\\ i& i& i\end{array}\right]$

 

ii) What is the average sales of the months June and July \(=\) $\left[\begin{array}{lll}i& i& i\\ i& i& i\end{array}\right]$

 

iii) If the sales continues to increase in the same way in the successive months, what will be sales in the month of October?