The ratio of the ages of three people is 4:6:7. Eight years ago, the sum of their ages was 78. Find their present ages.  Choose one:	A) 12,18,21	B) 16,24,28	C) 20,30,35	D) 24,36,42	E) 28,42,49
Let the present ages be 4x, 6x, 7x.   (4x-8) + (6x-8) + (7x-8) = 78   17x = 102   x = 6   Their present ages are 24, 36, and 42.   The answer is 24,36,42.
<result>D</result>
The ratio of the ages of three people is 4:6:7. Eight years ago, the sum of their ages was 78. Find their present ages.