These sample questions have been taken from the old GMAT question papers.
Answer each question yourself before reading the analysis that follows each question.
Of the 2,200 students who entered Ivy College this year, 60 percent graduated from public schools and the rest graduated from private schools. How many more public school graduates than private school graduates entered the Ivy College this year?
Of the 2,200 students entered Ivy College this year, 60% graduated from public schools and the remaining 40% graduated from private schools. So, the difference between their numbers is 20% of 2,200. This is equal to 440.
So, the answer is (C).
GMAT : Model Questions Index