Question 801791
  I'm half my mother's age. 
  my Dad is 5 yrs older than my mother.
  if we we add our ages the answer is 100 yrs...
 how old is the gal, her mum & her dad???
:
Shouldn't be hard, we have three statements for 3 unknowns
g = .5m
d = m + 5
g + m + d = 100
Replace g with .5m, replace d with m+5
.5m + m + (m+5) = 100
2.5m = 100 - 5
2.5m = 95
m = 95/2.5
m = 38 is Mom's age
you can find g and d, I'm sure