Amy is "n" years old.
Bob, her brother, is 9 years older than amy.
Their mother is 3 times as old as Amy.
Theirfather is twice as old as Bob.
(i) Write down an expression, in terms of "n" their fathers age??
amy=n
bob=n+9
mom=3n
dad=2(n+9)
To write down an expression for their father's age in terms of "n," we follow the given information:
Amy is "n" years old.
Bob is 9 years older than Amy, so Bob's age is n + 9.
Their mother is 3 times as old as Amy, so their mother's age is 3n.
Their father is twice as old as Bob, so their father's age is 2*(n + 9).
Therefore, the expression for their father's age is 2*(n + 9).
To write down an expression for their father's age in terms of "n," we can break down the given information and create an equation step-by-step:
Amy is "n" years old.
Therefore, Amy's age = n.
Bob, her brother, is 9 years older than Amy.
Bob's age = Amy's age + 9
Bob's age = n + 9.
Their mother is 3 times as old as Amy.
Mother's age = 3 times Amy's age
Mother's age = 3n.
Their father is twice as old as Bob.
Father's age = 2 times Bob's age
Father's age = 2(n + 9).
So, the expression for their father's age in terms of "n" is:
Father's age = 2(n + 9).
Please note that this expression represents their father's age based on the given information and assumptions made.