November 24, 2015

Homework Help: Math

Posted by Smartypants on Saturday, June 18, 2011 at 12:51am.

Mr lol bought x oranges for $30 and sold them at a profit of 5cents per orange. Write down the (i)cost price of an orange.
(ii)the selling price of an orange

When he had sold all except 20 of the oranges, he found he had received $28.
(iii) form an equation in x and show that it simplifies to xsquare + 20x -12000= 0

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