Computing interest amounts on notes receivable

A table of notes receivable for 2012 follows:

Principal

Interest Rate

Interest Period During 2012

Note 1

$ 30,000

8%

4 months

Note 2

10,000

11%

45 days

Note 3

19,000

10%

75 days

Note 4

100,000

7%

10 months

Requirement

1. For each of the notes receivable, compute the amount of interest revenue earned during 2012. Use a 360 day year, and round to the nearest dollar.