1. **State the problem:** We are given the sum of the ages of Jerry, Sowane, and Sashi as 64. 2. **Given data:** - Jerry's age = 23 - Sowane's age = 26 - Sashi's age = ? 3. **Formula used:** The sum of their ages is given by $$\text{Jerry's age} + \text{Sowane's age} + \text{Sashi's age} = 64$$ 4. **Substitute the known values:** $$23 + 26 + \text{Sashi's age} = 64$$ 5. **Simplify the left side:** $$49 + \text{Sashi's age} = 64$$ 6. **Isolate Sashi's age:** $$\text{Sashi's age} = 64 - 49$$ 7. **Calculate the result:** $$\text{Sashi's age} = 15$$ **Final answer:** Sashi is 15 years old.