In a parliament election, a political party hired a public relations firm to promote its candidates in three ways − telephone, house calls and letters. The cost per contact (in paisa) is given in matrix A asA=140200150TelephoneHouse callsLettersThe number of contacts of each type made in two cities X and Y is given in the matrix B as Telephone House calls LettersB=1000 500 50003000 1000 10000City XCity YFind the total amount spent by the party in the two cities.What should one consider before casting his/her vote − party's promotional activity of their social activities?

In a parliament election, a political party hired a public relations f

1.	In a parliament election, a political party hired a public relations firm to promote its candidates in three ways − telephone, house calls and letters. The cost per contact (in paisa) is given in matrix A asA=140200150TelephoneHouse callsLettersThe number of contacts of each type made in two cities X and Y is given in the matrix B as Telephone House calls LettersB=1000 500 50003000 1000 10000City XCity YFind the total amount spent by the party in the two cities.What should one consider before casting his/her vote − party's promotional activity of their social activities?
Answer» In a parliament election, a political party hired a public relations firm to promote its candidates in three ways − telephone, house calls and letters. The cost per contact (in paisa) is given in matrix A as $A = [\begin{matrix} 140 \\ 200 \\ 150 \end{matrix}] \begin{matrix} Telephone \\ House calls \\ Letters \end{matrix}$ The number of contacts of each type made in two cities X and Y is given in the matrix B as $\begin{matrix} Telephone & House calls & Letters \end{matrix} B = [\begin{matrix} 1000 & 500 & 5000 \\ 3000 & 1000 & 10000 \end{matrix}] \begin{matrix} City X \\ City Y \end{matrix}$ Find the total amount spent by the party in the two cities. What should one consider before casting his/her vote − party's promotional activity of their social activities?