Henry's mother is three times as old as he is. His grandmother is 35 years older than his mother. If Henry's grandmother was 7 years younger, she would be 5 times as old as Henry. How old is Henry's grandmother?

Answer 1

m =3h
g = m + 35
g-7 =5h

g =3h +35
g = 5h + 7

5h+7 = 3h +35
2h =28
h =14
m = 42
g =77