Question

The average age of a husband and a wife is 30. What is the wife's age if the husband's age is 40? Show your work​

Answer 1

20 years old

Explanation:

Suppose the husband's age is h and the wife's age is w.

The average of two numbers is their sum divided by 2. So, the average age of the husband and wife is:

(h + w)/2 = 30

We know that h = 40, so plug this into the equation above:

(40 + w)/2 = 30

40 + w = 2 * 30 = 60

w = 60 - 40 = 20

Thus, the wife is 20 years old.

~ an aesthetics lover

Answer 2

The Answer is 20

Explanation:

let's take wife's age as x

given,

(40 + x)/2 = 30

40 + x = 30*2

x = 60 - 40

x = 20