If Sarah had 65 assignments to do and she had 13 left, what percent is she finished? How many more assignments does she need to do to get to 85% done?

Answer 1

To calculate the percentage of assignments Sarah has completed, subtract the number of remaining assignments (13) from the total number of assignments (65): 65 - 13 = 52 assignments completed.
Next, calculate the percentage completed by dividing the number of completed assignments by the total number of assignments and multiplying by 100: (52 / 65) * 100 = 80%.
To find out how many more assignments Sarah needs to do to get to 85% done, subtract the current percentage (80%) from the target percentage (85%): 85% - 80% = 5%.
To find out how many assignments represent 5% of the total, multiply the total number of assignments (65) by 5%: (65 * 5%) / 100 = 3.25 assignments.
Since Sarah cannot do partial assignments, she needs to do 4 more assignments to reach 85% done.