Nodir kichik farzandi tug'ilganida 30 yoshda edi. Hozir Nodirning yoshi kichik farzandining yoshidan 3 marta katta bo'lsa, Nodir hozir necha yoshda?

Let $$x$$ be the age of Nodir's youngest child now. Then Nodir's age is $$3x$$. When the child was born, Nodir was 30 years old. This means the difference between Nodir's age and the child's age is 30. So, we have the equation: $$3x - x = 30$$ $$2x = 30$$ $$x = 15$$ Nodir's current age is $$3x = 3(15) = 45$$. Answer: 45