Question 1002063
Maybe this is better:

<i>Daughter is half her mother's age; father is 5 years more than the mother;  if we add add all their ages together, it gives us 100 years. What is the age of each?</i>


d, daughter
f, father
m, mother


{{{system(d=m/2,f=m+5,d+f+m=100)}}}