Answer:
77% (rounded)
Explanation:
1. Find 85% of 100
100 x 0.85 = 85
SO 85 students out of 100 students are good students.
2. Add the 10 more students to the total number.
100 + 10 = 110 total students
3. Find the percent of good students in the total number of current students.
85/110 = 0.77 * 100 (to convert to percent) = 77%