Question

The arithmetic mean of 4 and another number is 10.find the another number

Answer 1

let the other number is X
so arithmetic mean can be written as,
(4+X)/2=10
=> 4+X=20
=>X=20-4=16
the another number is 16.
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Answer 2

Answer:

The other number is=16

Step-by-step explanation:

Arithmetic mean is given as: $\frac{a+b}{2}$ where a and b are the two numbers.

Let the another number be denoted as X, and the arithmetic mean of two numbers is 10, then

$\frac{a+b}{2}$=$\frac{X+4}{2}=10$

⇒$4+x=20$

⇒$x=16$

Hence, the another number is 16.