Question

average of three numbers is 24. what number can be added to the total to get an average of 27​

Answer 1

Given:

The average of three numbers is 24.

To find:

What number can be added to the total to get an average of 27​?

Solution:

We know,

$\boxed{\bold{Average = \frac{Sum\:of \:obersations}{No.\:of\:observations} }}$

Since the average of 3 numbers = 24

∴ The sum of 3 numbers = 24 × 3 = 72

Let's assume "x" represents the number which can be added to the total.

According to the question, we can form an equation as:

$\frac{72 + x }{4} = 27$

$\implies 72 + x = 27 \times 4$

$\implies 72 + x = 108$

$\implies x = 108 - 72$

$\implies \bold{x = 36}$

Thus, 36 can be added to the total to get an average of 27.

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