i want to understand the process thank u.

#1. My and Mrs. Carter are both over 65 years of age. & are filling a joint return their income for the current year consisted of the follo: 35 payment (total) & 11,000 toxable pension $10,000! taxable dividends. 9,000 Tax-exempt interest 8, sool ISO60 What amount of their ss benefits is taxable? Taxable Interest b. 8,900