Afamily has annual loan payments equal to 30% of their annual income. during the year, their loan payments total $15,680. what is the family's annual income? (round your answer to the nearest cent.)

 First, set up a ratio:
The first fraction is the percentage (30% and are the same thing) and the second is the loan payment (which is equal to the 30 in the first fraction) over their annual income ().
 First you divide $15,680 by 30, then multiply that quantity by 100. The value calculated then replaces in your second fraction:

3x+9+4x+x=8x+9that's the answer for your question.