Question

3.
The average height of 6 students is 125 cm. If the heights of 5 of the students are 135 cm, 130
cm, 122 cm, 120 cm and 127 cm, what is the height of the 6th student?​

Answer 1

Answer:

The height of 6th student is 116cm.

Step-by-step explanation:

Let the height of 6th student be x.

Average = sum/total no.

Sum of heights of 6 students= Avg.× total no. of students

= 125×6

= 750.

now,

750 = 135+130+122+120+127+x

750=634+x

x= 750-634

x=116

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Answer 2

The question is The average height of 6 students is 125 cm. If the heights of 5 of the students are 135 cm, 130cm, 122 cm, 120 cm and 127 cm, what is the height of the 6th student?

The data given in the question is the height of 5 students.

we have to find the height of the 6 th student.

The average height of 6 students is given as 125 cm.

The 5 students' height is given as 135 cm, 130 cm, 122 cm, 120 cm, and 127 cm.

let the height of the 6 th student be x.

Average is calculated by dividing the sum of terms by the no of terms.

substitute the values in the formula we get

$125 = \frac{(135 + 130 + 122 + 120 + 127 + x)}{6}$

by simplifying this we get the values as

$125 = \frac{634 + x}{6}$

6 on the right multiply the 125 on the left.

$(125) \times (6) = 634 + x \\ 750 = 634 + x$

634 on right moves to left with the change in signature.

$750 - 634 = x \\ 116 = x$

The value of x is 116.

Therefore, the final answer to the given question is found to be 116

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