Question

The average height of 5 students is 1.45 m. If one student left the group,the average height of the remaining four of them is 1.44 m. What was the height of the student who left

Answer 1

4 students

Explanation:

The average = sum of all observations divided by a number of observations. Sum of heights of 4 students = 1.44 ×4 = 5.76. Clearly, height of student who left = Sum of all heights - Sum of heights of 4 students.