Question 998117
Call the woman's age now x.  The daughter's age now is y. So we write
x = y + 25
x - 3 = 3(y - 3)
Substituting we get
y + 25 - 3 = 3(y - 3)
y + 22 = 3y - 9
31 = 2y
y = 15.5 years
x = 40.5 years