The sales figure of two car dealers during January 2013 showed that dealer `A` sold 5 deluxe, 3 premium and 4 standard cars, while dealer `B` sold 7 deluxe, 2 premium and 3 standard cars. Total sales over the 2 month period of January-February revealed that dealer `A` sold 8 deluxe 7 premium and 6 standard cars. In the same 2 month period, dealer `B` sold 10 deluxe, 5 premium and 7 standard cars. Write `2xx3` matrices summarizing sales data for January and 2-month period for each dealer.

Explanation

According to the data, dealer A sold 5 deluxe cars, 3 premium cars and 4 standard cars in January. Also, dealer B sold 7 deluxe cars, 2 premium cars and 3 standard cars in January.
The above information can be given by
Deluxe Premium Standard
Dealer A
Dealer B $$\left[\begin{array}{ccc}5 & 3 & 4 \\ 7 & 2 & 3\end{array}\right]$$
Total sales over the period of January-February reveals that dealer A sold 8 deluxe cars, 7 premium cars and 6 standard cars, while dealer $$B$$ sold 10 deluxe cars, 5 premium cars and 7 standard cars.
This information can be given by
Deluxe Premium Standard
...