Question 588603
Solution:
Let Fayae age be "x" year
Then, Ilana age = x-31
      Leo   age = x+2
The sumof their three ages is 100
x+x-31+x+2=100
     3x-29=100
        3x=129
         x=43
Ilana age= x-31
         = 43-31
         =12 years old.