The digits of age are interchanged and 1 is added the answer half present How old Alberta now?

Let Alberta's present age be represented by a b .

Interchanging the digits: b a.

Adding 1: b a + 1 = 2 × ( b a /2 ) + 1 = a b.

Therefore, Alberta is half as old again as present age. Now Alberta is ( 1/2 ) + 1 times her present age = 3/2 times her present age.