A fruit shop has $5$ dozen oranges, $3$ dozen mangoes, $6$ dozen bananas their selling prices are Rs. $60$ , Rs. $40$ , Rs. $30$ each respectively. Using matrix algebra the value of the fruits in the shop is?

7200

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7000

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2700

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7500

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Solution

The correct option is C $7200$
$| \begin{matrix} 60 & 36 & 72 \end{matrix} |$ $∣ ∣ ∣ ∣ \begin{matrix} 604030 \end{matrix} ∣ ∣ ∣ ∣ = ∣ ∣ ∣ ∣ \begin{matrix} A B C \end{matrix} ∣ ∣ ∣ ∣$
$A = 3600, B = 1440, C = 2160$
Total price = $7200$

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