Present ages of X and Y are in the ratio 2:3 respectively. Four years hence this ratio will become 3:4 respectively. What is X's present age in years? Choose the correct choice from the following choices
A) 8
B) 36
C) 37
D) 39
E) 40
Let the present ages of X and Y be 2x and 3x years respectively.   Then, (2x + 4)/(3x + 4) = 3/4   4(2x + 4) = 3(3x + 4) =&gt;8x+16=9x+12 =&gt; x=4   X's present age = 2x = 2*4= 
<gadget id="calculator">2*4</gadget>
<output>8</output>
8   8NSWER:8
<result>A</result>
Present ages of X and Y are in the ratio 2:3 respectively. Four years hence this ratio will become 3:4 respectively. What is X's present age in years?