Bondable, Inc. issued $100,000, 10-year, 9% bonds that pay interest annually on January 1 when the going market interest rate was 10%. The issue (sale) price of the bonds equal ?

Solution:

$93,851.40 = ($100,000 x 0.3855) + (($100,000 x 0.09) x 6.1446)

I have the solution, but can you explain in depth? where does the numbers come from? (0.3855, 6.1446)?