Answer:
Marked-down price: $19.99
Step-by-step explanation:
The markdown amount is ...
$29.99×33 1/3% = $10.00 . . . . . 9.99667 rounded up
The marked-down price is the original price less the markdown:
$29.99 - 10.00 = $19.99
_____
You will recognize that 33 1/3% = 1/3, so that the calculation is ...
[tex]\text{markdown}\,=\dfrac{\$29.99}{3}=\$9.99\overline{6}\approx\$10.00[/tex]
