7 pens and 2 pencils costs £22. 3 pens and 4 pencils costs £11. Find the cost of a pen. Find the cost of a pencil.
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Answer:
pencil cost 0.5€ pen cost 3€
Step-by-step explanation:
assume pens as X and pencil as Y
the equation becomes 7x+2y = 22 and 3x+4y=11
solving these equations you get the values of x and y
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