Posted: Wed Apr 24, 2002 2:03 pm
Now you can fill in the other unknowns:
age difference = z = x1 – y1 = 40 – 30 = 10 years
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.
age difference = z = x1 – y1 = 40 – 30 = 10 years
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.