Cate's mother is four times as old as Cate is now. In 6 years, Cate's mother will be three times as old a Cate will be then. How old is Cate now (IN YEARS)?
c = cate now
m = 4 c
in 6 yrs : m+ 6 = 3 * ( c+6) sub in red equation
4c + 6 = 3 ( c+6) solve for c
