Question

Katie is twice as old as her sister Mara. The sum of their ages is 24. Write one variable equation to represent the situation

Answer 1

Katie is twice as old as her sister Mara that means the

Age of Katie = 2 x Age of Mara.

The sum of thier ages = 24 i.e

Age of Katie + Age of Mara =24

Let the age of Mara is y.

Since, Age of Katie = 2 x Age of Mara.

So,

Age of Katies = 2y

Sum of ages =24

So,

y + 2y =24 is the required equation to represent the situtatio.

3y = 24

y = 8 is the age of Mara

Age pf Katie = 2 x 8

Age of Katie =16 years