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I need help plz don't post irrelevant questions |
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Answer» Answer: 3 Pen +4 Notebook =110 rupees MULTIPLY by 5, 15 Pen +20 Notebook =550 rupees 7 Pen +5 Notebooks =170 rupees Multiply by 4, 28 Pen +20 Notebook =680 rupees 15 Pen +20 Notebook =550 rupees EQUATING and solving for Pen, CANCELLING notebook, 13 Pen =130 Hence, Pen =10 rupees Substituting, 3(10)+4 Notebook =110 4 Notebook =110−30 Hence, Notebook =20 rupees
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