# Sam invests $6000 in treasury notes and bonds. The notes pay 8% annual interest and the bonds pay 10% annual interest. If the annual interest is $550, how much is invested in bonds?

##### 1 Answer

Aug 21, 2016

$3500 in bonds.

#### Explanation:

8% = multiply by 0.08

10% = multiply by 0.10

Let

Multiply the second equation by 10:

Substitute in for

Multiply both sides by 5: