One year ago, Mrs Promila was four times as old as her daughter Swati. Six year hence,Mrs. Promila’s age will exceed her daughter’s age by 9 years. The ratio of the present ages of Promila and her daughter is
Answers:  A) 9:2  B) 11:3  C) 12:5  D) 13:4  E) None of these
Let Swati’s age 1 year ago = x   Then Promila’s age 1 year ago = 4x   Then, (4x + 6) - (x + 6) = 9   =&gt; 3x = 9   =&gt;x = 3   Present age of Promila   = (12 + 1)= 
<gadget id="calculator">(12 + 1)</gadget>
<output>13</output>
13 years   Present age of Swati=(3 + 1)= 
<gadget id="calculator">(3 + 1)</gadget>
<output>4</output>
4 years   Thus, Ratio of their ages= 13:4   ANSWER:13:4
<result>D</result>
One year ago, Mrs Promila was four times as old as her daughter Swati. Six year hence,Mrs. Promila’s age will exceed her daughter’s age by 9 years. The ratio of the present ages of Promila and her daughter is