Question

One-half of Alvin's age two years from now plus one-third of his age three years ago is twenty years.How old is he now?

Answer 1

Answer:

Martha is X years old. If (X+2)/2 + (X + 3)/3 = 20, then solve for X

6 [ (X+2)/2 + (X + 3)/3] = 6 x 20,

3 (X + 2 ) + 2(X + 3) = 120,

3X + 6 + 2X + 6 = 120,

5X = 120 - 12.

X = 108/5

X = 21.6

Martha is 21 and 7 months, roughly 22,

So 24/2 + 25/3 = 20 , More or less :)