9. The annual interest rate is 21%. The balance after the grace period was $700. No payments were received. What is the interest for the month?

Interest for the month = $12.25

Step-by-step explanation:

Given:

Amount in bank = $700

Rate of interest per month = 21% / 12 = 0.0175

Find:

Interest for the month

Computation:

Interest for the month = Amount in bank × Rate of interest per month

Interest for the month = $700 × 0.0175

Interest for the month = $12.25