Question

Five students sit for an exam which has a maximum score of 100. The average of the five scores achieved by the students in the exam was 89. What could the minimum score be gained?

Answer 1

average of 5 scores achieved by 5 students = 89
 Total marks achieved by 5 students = 5 * 89 = 445

suppose 4 students scored the maximum of 100 marks, then the fifth student would have scored = 445 - 400 = 45

So 45 is the lowest score possible for any student.