he average height of 5 students is 1.45 m. If one student left the group,the averageheight of the remaining four of them is 1.44 m. What was the height of the student who left.
Question
he average height of 5 students is 1.45 m. If one student left the group,the averageheight of the remaining four of them is 1.44 m. What was the height of the student who left.
Solution
Step 1: Find the total height of the 5 students.
The average height of the 5 students is 1.45 m. To find the total height, you multiply the average height by the number of students.
1.45 m * 5 = 7.25 m
Step 2: Find the total height of the 4 students.
The average height of the 4 students is 1.44 m. To find the total height, you multiply the average height by the number of students.
1.44 m * 4 = 5.76 m
Step 3: Find the height of the student who left.
To find the height of the student who left, you subtract the total height of the 4 students from the total height of the 5 students.
7.25 m - 5.76 m = 1.49 m
So, the student who left was 1.49 m tall.
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