After 6 years, I will be twice as old as I was 9 years . How old am I
Answers
Step-by-step explanation:
Instead of using algebra, let's see if we can use logic and common sense. (Algebra is more powerful, but it confuses some people.)
In two years, I will be twice the age I was three years ago. So there are two ages, past and future; old me is twice the age of young me, and is also five years older.
So young me is five, and old me is ten. (That makes sense, right? If I have double what you have, that means I have what you have, plus the same over again. So the difference between you and me is the same as what you have. It doesn't have to be years. If I have twice as many strawberries as you do, and I also have five more than you do, then that means you have five and I have twice as many, or ten.)
But the question is how old I am currently. (Always reread the original question!) I was five three years ago… so now I'm eight.
But you should always check your answer. If I'm eight now, then in two years I'll be twice the age I was three years ago. Yes, that works