Apply the first discount, then the second discount on the already-reduced price.<br><br>
&bull; After first 20% discount: \(\$1500 \times (100\% - 20\%) = \$1500 \times 0.80 = \$1200\)<br>
&bull; After additional 10% discount: \(\$1200 \times (100\% - 10\%) = \$1200 \times 0.90 = \$1080\)<br><br>
Final Answer: \(\$1080\)