# Davindra, who is 15 years old, is one year older than twice the age of her younger sister, Preetha. How do you find the age of Preetha and justify each step?

##### 1 Answer

Jan 11, 2017

Preetha's age is

#### Explanation:

We consider Preetha's age as

From the given data, we know Davindra's age and also how it compares to Preetha's age. Hence, we can write:

Subtract

Divide both sides by