Three person buy cold drinks of different brand A, B and c. The first person buys 12 bottles of
A, 5 bottles of B and a bottles of c. The second
Person buy 4 bottles
of A, 6 bottle
10 bottles of c. The third person buys 6 bottles of
A 7 bottles of B and 9 bottles of c. Represent
these information in the form of a matrix. if each
bottle of brand a cost 4,5 and 6, respectively,
then using martix operations, find the total sum 9f
money spect individually by the three persons for
the purchase of cold drinks.
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