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Sagot :
Answer: [tex]\begin{bmatrix}{5.00} & {3.50} \\ {6.50} & {2.60}\end{bmatrix}\text{ }\operatorname{\lparen}\text{opt}\imaginaryI\text{onB}\operatorname{\rparen}[/tex]Explanation:
Sales price for the rice varieties:
John:
Basmati cost = $5 per kg
Naura cost = $3.5 per kg
Harry:
Basmati cost = $6.5 per kg
Naura cost = $2.6 per kg
Writing in the form matrix:
[tex]\begin{gathered} let\text{ first column represent basmati rice} \\ let\text{ the 2nd column represent Naura rice} \\ In\text{ matrix, x and y can be represented as:} \\ \begin{bmatrix}{x\text{ column}} & {y\text{ column}} \\ {}{{x\text{ column}}} & {{y\text{ column}}}\end{bmatrix} \end{gathered}[/tex][tex]\begin{gathered} x\text{ = Basmati, y = Naura} \\ \\ \begin{bmatrix}{5.00} & {3.50} \\ {6.50} & {2.60}\end{bmatrix}\text{ \lparen option B\rparen} \end{gathered}[/tex]
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