Present ages of Sameer and Anand are in the ratio of 5 : 4 respectively. Eight years hence, the ratio of their ages will become 11 : 9 respectively. What is Anand's present age in years? Choose one.
A) Can't be determined B) 40 C) 27 D) 64 E) None of these
Explanation:   Let the present ages of Sameer and Anand be 5x years and 4x years respectively.   Then, (5x+8)/(4x+8)=11/9   ⇒ 45x + 72 = 44x + 88⇒ 9(5x + 8) = 11(4x + 8)   ⇒ 45x - 44x = 88 - 72= 
<gadget id="calculator">88 - 72</gadget>
<output>16</output>
16.   Anand's present age= 4x = 64 years.   Answer: 64
<result>D</result>
Present ages of Sameer and Anand are in the ratio of 5 : 4 respectively. Eight years hence, the ratio of their ages will become 11 : 9 respectively. What is Anand's present age in years?