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The cost of 4 dozen pencils, 3 dozen pe...

The cost of 4 dozen pencils, 3 dozen pens and 2 dozen erasers is Rs. 60.
The cost of 2 dozen pencils, 4 dozen pens and 6 dozen erasers is Rs. 90 whereas the cost of 6 dozen pencils, 2 dozen pens and 3 dozen erasers is Rs. 70. Find the cost of each item per dozen by using matrices.

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The correct Answer is:
The cost is Rs. 5 per dozen for pencils, Rs. 8 per dozen for pens and Rs. 8 per dozen for erasers.
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NAVNEET PUBLICATION - MAHARASHTRA BOARD-QUESTION BANK 2021-MATRICES
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