Assignment:
Q1. Barbie's father's age is 45. He is 15 more than than twice the age of Barbie. How old is Barbie?
Q2. Brenda's age is 3 times Layton's age. In 4 years, she will be twice as old as Layton by then. What are their present ages?
Provide complete and step by step solution for the question and show calculations and use formulas.