Monthly salary of Kedar = $2000 Percentage commission on the amount of his sales = 3.75% Amount of money for which clothing sold by Kedar = $4500 Amount of interest earned by Kedar this month = (3.75/100) * 4500 = 3.75 * 45 = 168.75 dollars So The total amount earned by Kedar this month = (2200 + 168.75) dollars = 2368.75 dollars So Kedar earned a total amount of $2368.75 this month.I hope the procedure is absolutely clear to you.