Question 1122755
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The purchase price is $1.44 per dozen, or 12 cents each.<br>
She sold 4/5 of them at 4 for 60 cents, a rate of 15 cents each; she sold 1/5 of them at 2 for 25 cents, a rate of 12.5 cents each.<br>
Let x be the number she bought.  Then write and solve the equation that says<br>
4/5 of the oranges at 15 cents each, plus 1/5 of them at 12.5 cents each, is $5.00 (500 cents) more than all the oranges at 12 cents each:<br>
{{{15((4/5)x)+12.5((1/5)x) = 12(x)+500}}}<br>
You can finish from there....