 Hello and welcome to the session. In this session we are going to discuss the following question and the question says that Joseph is six years old. His brother John is five years older than him and his aunt Mary is four times as old as John. Write an expression for his aunt's age and simplify. Let us move on to the solution. In this question we are given that Joseph's age is six years. That is, Joseph's age is given as six years. His brother John is five years older than him. Therefore, John's age will be five more than Joseph's age here. More than means five years added to Joseph's age. That is, John's age will become x plus five years. Now, his aunt Mary's age is given as four times. John's age and Mary's age is given as four times. John's age here four times means into four which implies aunt Mary's age is equal to four into John's age. So, the expression for aunt Mary's age will be equal to four into John's age. That is, x plus five years. And this can also be written as five into x plus four into five by using distributive property. On simplifying this expression, we get aunt Mary's age is equal to four into x that is four x plus four into five that is twenty. So, we get four x plus twenty years. Hence, this is the simplified expression for aunt Mary's age which is the required answer. This completes our session. Hope you enjoyed this session.