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A shopkeeper has 3 varieties of pens ' ...

A shopkeeper has 3 varieties of pens `' A^(prime),\ ``' B '` and `' C '`. Meenu purchased 1 pen of each variety for a total of Rs 21. Jeen purchased 4 pens of `' A '` variety, 3 pens of `' B '` variety and 2 pens of `' C '` ariety for Rs 60. While Shikha purchased 6 pens of `' A '` variety, 2 pens of `' B '` variety and 3 pens of `' C '` variety for Rs 70. Using matrix method find the cost of each pen.

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A shopkeeper has 3 varieties of pens ‘A’, ‘B’ and ‘C’. Meenu purchased 1 pen of each variety for a total of Rs. 21. Jeevan purchased 4 pens of ‘A’ variety, 3 pens of ‘B’ variety and 2 pens of ‘C’ variety for Rs. 60. While Shikha purchased 6 pens of ‘A’ variety, 2 pens of ‘B’ variety and 3 pens of ‘C’ variety for Rs. 70. Using matrix method, find cost of each variety of pen.

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