due to rise in prices of mango ,sheetal demand only three dozen mangoes instead of five dozen? explain the concept from the given illustration
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Let A the row matrix representing the quantities bought, then A=[
8
10
4
] is a 1×3 matrix.
Let B be the column matrix representing the cost of mangoes,apples and bananas per dozen the B=
⎣
⎢
⎢
⎡
18
9
6
⎦
⎥
⎥
⎤
is a 3 x 1 matrix
The total cost is given by the product AB
and AB=[
8
10
4
]
⎣
⎢
⎢
⎡
18
9
6
⎦
⎥
⎥
⎤
=[144+90+24]=[258]
Hence, the total cost is Rs 258
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