I have a question about math problem that I found online practice test.
There is a table that looks like
Student status- approve- disapprove- no opinion
High school 30 - 4 - 11
College 14 - 10 - 6
nonstudent 85 - 353 - 47
total 129 - 367 - 64
Total resident is 560.
The question: After constructing the table, it was discovered that the student status of 15 residents who replied that they
approved had been incorrectly classified as nonstudents. After correcting errors, exactly 60% of the college
students had replied that they approved. To the nearest 1%, what percent of high school students replied that
they approved?
The answer is 70%.
I got 73% because
60% times 30(college students) is 18, so there will be 4 more college students who approved. Since 15 residents were incorrectly classified as nonstudents, 11will be added to 30. so a total of 41 high school students have approved.
so 41/ 56(new total number of high school students) is 73%.
an ideas? i tried to write the table in order, but the form changes after posting.