Amounts Invested

[Guest]

\$20,000 is invested, part at 4% and part at 6%. The total income from the 2 investments is \$1050. Determine amt. at each rate.

My attempt:

Let x = amt. at 4% (4% is .04).

20,000 - x = amt. at 6% (6% is .06).

Unsure how to proceed.

[Guest]

Please respond. Thanks.