Question 1019442
x=wife's age
x+3= man's age since he is 3 years older
(x+3)=4* son's age.  The son is 12, because in 3 years he will be 15.
x+3=4*12=48
The man is 48.
Now, the wife is 45, but the question is in the future tense. What WILL be the age of his wife?  In 3 years, his wife will be 48.  The answer is C.