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?