Dd is stuck on her homework for year 8, please help. They've been doing variable equations and things with brackets and x and y - all totally above me. They were given 2 questions to answer and she's managed one - correct too as unknown to dd, I have the answer book (but it doesn't show the working out bit so need help where she's now stuck)
In 16 years a father will be twice as old as his son. Together, they add up to 40 years today. How old are they? How does she work it out if x is the son's age?
Thanks albird and busybee18 how I wish I had listened more in maths!
I don't get it, although I understood professorpoopsnagle's way of working it out but dd seems to have understood the principal theme of writing the equation (although she's still abit stuck) I think she's getting there.