In a class the ratio of students who pass to students who fail is 7 to 2. If 18 students failed, how many passed?

Correct answer to question 169 (Arithmetic Reasoning): 63 students

Method

Since 2 parts correspond to 18 failing students, each part equals 9 students. Passing students make up 7 parts, so 7 x 9 = 63 students passed.