Question

jack is 3 times as old as Jill but in three years time he will only be twice as old how old are jack and jill

Answer 1

Jack is 9, Jill is 3. In 3 years jack will be 12, Jill will be 6. 12 is 6 doubled!

Hope I helped!!(

Answer 2

Jill is 3 years old and Jack is 9 years old.

Given : Jack is 3 times as old as Jill but in three years he will only be twice as old.

To find : The present ages of Jack and Jill.

Solution :

We can simply solve this mathematical problem by using the following mathematical process. (our goal is to calculate the required ages)

Let, the present age of Jill = x years

So, the present age of Jack = (3 × x) = 3x years

After 3 years :

• Age of Jill = (x+3) years
• Age of Jack = (3x+3) years

According to the data mentioned in the question,

3x+3 = 2 × (x+3)

3x+3 = 2x+6

3x-2x = 6-3

x = 3

Present age of Jill = x years = 3 years

And,

Present age of Jack = 3x years = (3 × 3) years = 9 years

Hence, Jill is 3 years old and Jack is 9 years old.