Question

Brian is 71 years old. Karissa is 17 years old. How many years until Brian’s age is 3 times Karissa’s age?

Answer 1

It will take 10 years for Brian's age to be 3 times Karissa's age, based on the current age difference of 54 years and solving a simple equation.

Step-by-step explanation:

The age difference between Brian and Karissa is 71 - 17 = 54 years. This difference will remain constant. To find out how many years it will take until Brian's age is 3 times Karissa's age, we can set up an equation:

Let x be the number of years until Brian's age is 3 times Karissa's age.

Brian's age in x years will be 71 + x.

Karissa's age in x years will be 17 + x.

We are looking for when:

71 + x = 3(17 + x)

Now, we solve for x:

71 + x = 51 + 3x

71 = 51 + 2x

71 - 51 = 2x

20 = 2x

x = 10

Therefore, it will take 10 years for Brian's age to be 3 times Karissa's age.