27. Sophia’s goal this past summer was to save an average of $5.00 per week for 10 weeks. She saved an average of $4.00 per week for the first 9 weeks and saved $12.00 for the 10th week. On average, how much more should Sophia have saved each week to reach her goal?

Answer and Explanation

Your Answer is

Correct Answer is B

Explanation

First of all, Sophia's target total is US$5×10=50, and her actual accumulated amount over the past ten weeks is 9×4+12=48, so the difference is US$2, and on average, she should have accumulated 2÷ more per week 10=0.2 US dollars