Aisha is n n\,n years old. Rachel is 12 years older than Aisha Tim is 9 years younger than Aisha.
Write an expression for Rachel's age.
Write an expression for Tim's age.
Write an expression for the total age of Aisha, Rachel and Tim.
267 exam-style questions on OCR GCSE Maths Writing an Expression. Each one has a worked solution and a mark scheme showing where the marks go.