To find the new mean height after one friend leaves, we need to subtract the height of the friend who left from the total height and then divide by the number of remaining friends.
Given:
Mean height of 11 friends = 155.2 cm
Height of the friend who left = 158 cm
To calculate the new mean height:
Step 1: Subtract the height of the friend who left from the total height of the 11 friends.
Total height of 11 friends = 155.2 cm * 11 = 1707.2 cm
New total height = 1707.2 cm - 158 cm = 1549.2 cm
Step 2: Divide the new total height by the number of remaining friends (11 - 1 = 10).
New mean height = 1549.2 cm / 10 = 154.92 cm
Therefore, the new mean height after one friend leaves is 154.92 cm.
[tex]\boxed{\bf\:RAM\:RAM}[/tex]
[tex]\huge{\bf{{\underline{\colorbox{red} {\color{black} {जय श्री राम}}}}}}[/tex]
Answers & Comments
Answer:
[tex]\boxed{\bf\:154.92\:cm}[/tex]
To find the new mean height after one friend leaves, we need to subtract the height of the friend who left from the total height and then divide by the number of remaining friends.
Given:
Mean height of 11 friends = 155.2 cm
Height of the friend who left = 158 cm
To calculate the new mean height:
Step 1: Subtract the height of the friend who left from the total height of the 11 friends.
Total height of 11 friends = 155.2 cm * 11 = 1707.2 cm
New total height = 1707.2 cm - 158 cm = 1549.2 cm
Step 2: Divide the new total height by the number of remaining friends (11 - 1 = 10).
New mean height = 1549.2 cm / 10 = 154.92 cm
Therefore, the new mean height after one friend leaves is 154.92 cm.
[tex]\boxed{\bf\:RAM\:RAM}[/tex]
[tex]\huge{\bf{{\underline{\colorbox{red} {\color{black} {जय श्री राम}}}}}}[/tex]