Question

The average age of 5 students in 10 years a student aged
14 drops out find the new average of the remaining 4 students

Answer 1

Answer:

The new average would be 9 years

Step-by-step explanation:

Given,

The number of students = 5,

Average age = 10 years,

∵ $\text{Average }=\frac{\text{Sum of all observation}}{\text{Number of observations}}$

$\implies \text{Sum of observations}=\text{Average}\times \text{total observations}}$

Thus, sum of ages of 5 students = 5 × 10 = 50 years,

If a student of age 14 years left,

Then new sum of ages = 50 - 14 = 36,

While, new number of students = 4,

Hence, the new average = $\frac{36}{4}$ = 9 years.

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