In 12 years , a man will be three times as old as his son; the difference of their present ages is 30 years. Find their present ages?

In 12 years , a man will be three times as old as his son; the differe

1.	In 12 years , a man will be three times as old as his son; the difference of their present ages is 30 years. Find their present ages?
A.	20 and 13 years
B.	24 and 12 years
C.	33 and 3 years
D.	none of these
Answer» D. none of these