Question

mean of 10 value is x ,a man scored 42 in the 11th" match,, his average increased by 2,find the average​

Answer 1

Answer:

The original mean was 20.

Step-by-step explanation:

The mean of 10 values is x.

$x=\frac{1}{10}\times Sum$

Simplify the equation as follows;

$x=\frac{1}{10}\times Sum\\\Rightarrow Sum=10x$

On adding another value 42, the new mean is, x + 2.

$x+2=\frac{1}{11}(Sum +42)$

Simplify the second equation as follows:

$x+2=\frac{1}{11}(Sum +42)\\11x+22=Sum+42\\11x+22=10x+42\\x=20$

Thus, the original mean was 20.

Answer 2

Answer:20

Step-by-step explanation:

Let the original average be x.

A.T.Q.

10x+42=11x+22

x=20

Original average=20

New average=22