The present ages of three persons in proportions 2 : 7 : 9. Eight years ago, the sum of their ages was 30. Find their present ages (in years).  Choose the correct choice from the following:
A) 17,20, 28
B) 22,28, 36
C) 21,35, 45
D) 33,42,43
E) 6,21,27
Let their present ages be 2x, 7x and 9x years respectively.   Then, (2x - 8) + (7x - 8) + (9x - 8) = 30   18x = 54   x = 3.   Their present ages are 2x = 6 years, 7x = 21 years and 9x = 27 years respectively.   ANSW6,21,27R:6,21,27
<result>E</result>
The present ages of three persons in proportions 2 : 7 : 9. Eight years ago, the sum of their ages was 30. Find their present ages (in years).