Question 1088702
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pen = pencil + 30,   (1)

5 pens + 2 pencil = 430   (cents)

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5*(pencil+30) + 2 pencil = 430,

5*pencil + 150 + 2 pencil = 430,

7 pencil = 430 - 150,

7 pencil = 280   ====>  pencil = {{{280/7}}} = 40 cents.


<U>Answer</U>. Pencil costs 40 cents.  Pen costs 40 + 30 = 70 cents.
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Solved.