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Question:

To promote the making of toilets for women, an organization tried to generate awarencess through:(i) house calls(ii) letters(iii) announcements.The cost for each mode per attempt is given below:(i) Rs50(i) Rs20(i) Rs40The number of attempts made in three villages X, Y and Z are given below:(i) (ii) (iii)X400300100Y30025075Z500400150Find the total cost incurred by the organization for the three villages separately, using matrices.Write one value generated by the organization in the society.To promote the making of toilets for women, an organization tried to generate awarencess through:(i) house calls(ii) letters(iii) announcements.The cost for each mode per attempt is given below:(i) Rs50(i) Rs20(i) Rs40The number of attempts made in three villages X, Y and Z are given below:(i) (ii) (iii)X400300100Y30025075Z500400150Find the total cost incurred by the organization for the three villages separately, using matrices.Write one value generated by the organization in the society.5050505050202020202040404040404004004004004003003003003003001001001001001003003003003003002502502502502507575757575500500500500500400400400400400150150150150150?

Solution:

Total cost=Σnumber of attempts per mode times cost per attempt per mode.In matrix form it simply becomes,⎡⎢⎣40030010030025075500400150⎤⎥⎦⎡⎢⎣502040⎤⎥⎦=⎡⎢⎣300002300039000⎤⎥⎦.total cost in village X=30,000total cost in village Y=23,000total cost in village Z=39,000