Presently the ratio between the ages of Dan and James is 6:5. after 4 years Dan will be 28. What is the present age of James? Select:
A) 20
B) 19
C) 21
D) 18
E) 22

Rationale: let the present ages dan and james be 6 x years and 5 x years respectively 6 x + 4 = 28 6 x = 24 x = 4 kim ' s age = 5 x = 20 years answer is a
Answer: A