present ages of A and B are in the ratio of 5:3 respectively. 4 years hence, the ratio of their ages will become 11:9 respectively . what A's age after 3 years?
Choose the correct choice from the following:
A) 25	B) 21	C) 28	D) 24	E) 35
A and 21 be 5x years and 3x years respectively   (5x+4)/(3x+4)=11/9   9(5x+4)=11(4x+4), 45x+36=44x+44   x=8, therefore A's present age : 3x=24 years   A's age after 4 year = 24+4= 
<gadget id="calculator">24+4</gadget>
<output>28</output>
28   correct answer(21)
<result>B</result>
present ages of A and B are in the ratio of 5:3 respectively. 4 years hence, the ratio of their ages will become 11:9 respectively . what A's age after 3 years?