Mathematics, 27.04.2021 23:30 chem1014

Black Pencils cost £75 each and coloured pencils £105 each. If 24 mixed pencils cost £2010, how many of them were black. (Hint: (24-x) - coloured pencils, (x) - black pencils)

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Black Pencils cost £75 each and coloured pencils £105 each. If 24 mixed pencils cost £2010, how many...

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