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Integrals

Question
CBSEENMA12035679

Three schools X, Y, and Z organized a fete (mela) for collecting funds for flood victims in which they sold hand-held fans, mats and toys made from recycled material, the sale price of each being Rs. 25, Rs. 100 andRs. 50 respectively. The following table shows the number of articles of each type sold:
School/Article                     School X                   School Y                School Z
Hand-held fans                         30                         40                         35
      Mats                                  12                         15                         20
       Toys                                 70                         55                         75
Using matrices, find the funds collected by each school by selling the above articles and the total funds collected. Also write any one value generated by the above situation. 

Solution
open square brackets table row 30 12 70 row 40 15 55 row 35 20 75 end table close square brackets space open square brackets table row 25 row 100 row 50 end table close square brackets
space space space space equals space open square brackets table row cell 30 cross times 25 plus 12 cross times 100 plus 70 cross times 50 end cell row cell 40 cross times 25 plus 15 cross times 100 plus 55 cross times 50 end cell row cell 35 cross times 25 plus 20 cross times 100 plus 75 cross times 50 end cell end table close square brackets
space space space space equals open square brackets table row 5450 row 5250 row 6625 end table close square brackets space equals space open square brackets table row straight X row straight Y row straight Z end table close square brackets
The funds collected by X = Rs.5450,  Y= Rs. 5250, Z = Rs. 6625
Total funds collected  = Rs. 17325
Value generated: team work.

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