Question 227679
"Five years ago, Tom was one third as old as his father was then" ___ 3(t - 5) = f - 5 ___ 3t - 15 = f - 5 ___ 3t - 10 = f


"In 5 years, Tom will be half as old as his father will be then" ___ 2(t + 5) = f + 5 ___ 2t + 10 = f + 5 ___ 2t + 5 = f


substituting ___ 2t + 5 = 3t - 10 ___ 15 = t


substituting ___ 2(15) + 5 = f ___ 35 = f