Question

at the beginning of 2002 Jacob savings account had $675.20 he deposited $40 each month and earn $66.50 interest for the year what was the percent of increase for Jacob savings account at the end of the year to the nearest whole percent

Answer 1

The increase from 675.20 was 66.50. Expressed as a percentage, that is
.. 66.50/675.20 = .098489 ≈ 10%