Question 957032
J=Mr. James age; D=daughter's age
J=4D
J-D=36yrs
4D-D=36yrs
3D=36yrs
D=12yrs ANSWER 1: The daughter is 12 years old. 
J=4D=4(12yrs)=48yrs ANSWER 2: Mr. James is 48 years old.
CHECK
J-D=36yrs
48yrs-12yrs=36yrs
36yrs=36yrs