8.sandy was 25 years old when her son was born. Her present age is 7 years less than three times her son's present age. How old is sandy now?
Let S be Sandy's current age and let her son's current age be A.
We know that Sandy was 25 years old when her son was born, so Sandy's age when her son was born was A + 25.
We also know that Sandy's present age is 7 years less than three times her son's present age, so:
S = 3A - 7
Now, we can substitute the first equation into the second equation to solve for Sandy's current age:
3A - 7 = A + 25
2A = 32
A = 16
Therefore, Sandy's current age, S, is:
S = 3(16) - 7
S = 48 - 7
S = 41
So, Sandy is currently 41 years old.