# My father is four times as old as me. In 20 years, he will be only twice as old as me How is my father and how old am l?

##### 3 Answers

I got that you are

#### Explanation:

Let us call the age of your father

we have, substituting the first into the second:

so that:

I am currently 10 years old and my father is currently 40 years old.

#### Explanation:

Let's let my age be

So right now my father's age, Let's call it

So in 20 years I will be

Substituting

So my age is currently 10 years old.

Substituting 10 for

I am 10 years old now and and my father is 40.

#### Explanation:

Although we are dealing with the ages of two people, we only need to use one variable, because we know how their ages are connected.

Let my present age be

**In 20 years time**

My age will be

Then, twice my age will be the same as my father's age.

"2 x younger age = older age"

Do not make the mistake of doubling the father's age!