Question

the average age of students in the class of strength 50 is 25. if 2 students let the college aged 26 and 28 then what would be the new average​

Answer 1

Answer:

24.91

Step-by-step explanation:

Initially total weight of class is 50*25= 1250 Kg

2 students of weights 26&28 left, so total weight of remaining 48 students would be 1250-26-28= 1196

Average of 48 students with total weight 1196= 1196/48= 24.91

Answer 2

Answer:

The new average age of students in the class  = 24.91

Step-by-step explanation:

Given,

Strength of the class  = 50

Average the age of students = 25

Ages of the two students left are 26 and 28

To find,

The new average of 48 students

Recall the formula,

Average = $\frac{Sum\ of \ observations }{Total \ no \ of \ observations}$

Solution:

Since the average age of 50 students is 25, we have

25 = $\frac{Sum\ of \ ages \of\ 50\ students }{50}$

Sum of ages of 50 students = 25 × 50 = 1250

Sum of ages when two students of ages 26 and 28 are left the college = 1250 - 26 -28

=1196

No of students in the class now = 48

New average = $\frac{Sum\ of \ ages \of\ 48\ students }{48}$

= $\frac{1196}{48}$

= 24.91

∴The new average age of students in the class  = 24.91

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