3 is in the tens and 1 is in the ones. To explain more easily... 30+1 is 31.<span />
52.25 x 0.08 = 4.18
So the tax is $4.18, and the total cost is $56.43
The correct selling price is about $20, and the likely mistake was the manager multiplied the $12 by .67 (the 67%), got about 8, and took that as the price instead of adding it to the original 12, which is what they were supposed to do.
<span>z³ = 10,648
</span>z³ = 22³
z = 22