her past age = x2 = (x1 + y1)/2 = (40 + 30)/2 = 35 years old
his past age = y2 = x2 – z = 35 – 10 = 25 years old
her future age = x3 = 2y2 = 2(25) = 50 years old
his future age = y3 = x3 – z = 50 – 10 = 40 years old
Hence, working out their present ages, the prince is 30 and the princess 40.
Must be related to my wife.
To the Righteous belong the fruits of violent victory. The rest of us will have to settle for warm friends, warm lovers, and a wink from a quietly supportive universe.