Let investment in B = x dollars. Then A = x + 2,000.<br>
Total: x + (x + 2,000) = 10,000<br>
&bull; 2x = 8,000 &rArr; x = 4,000<br>
&bull; A = 4,000 + 2,000 = 6,000<br><br>
[[model:questions/solutions/q6976.png]]<br><br>
Verify interest: A gives 8% of 6,000 = 480; B gives 10% of 4,000 = 400.<br>
Total interest = 480 + 400 = 880. Matches. ✓<br><br>
Final Answer: $6,000