Question

If the mean of 12 numbers is 20 then their algebraic sum is​

Answer 1

Answer:

240

Step-by-step explanation:

mean =12

number =20

12×20=240

Answer 2

Answer:

Required algebraic sum is 240.

Step-by-step explanation:

Mean of 12 numbers is 20.

Here we want to find algebraic sum.

Mean= average of numbers.

We know average $= \frac{sum \: of \: numbers}{numbers \: \: of \: values}$

So,Sum of numbers $= average \times numbers \: of \: values$

Let average of x numbers is y.

So algebraic sum of those numbers are $(x \times y) = xy$.

Here given, average of 12 numbers is 20.

So,algebraic sum of these numbers $= 12 \times 20 = 240$.