five years ago, my grandfather was five times as old as I was. Three years from now, my grandfather will be three times as old as I will be. how old am I now?
you're 13 now. you were 8 five years ago while ur grandfather was 40(40/5=8) 8yrs from then, which is three years from now, ur 16 while ur grandfather is 48 (48/3=16) minus the three years to today 16-3=13. You are 13 yrs old.