Six years ago, the ratio of the ages of Kunal and Sagar was 6 : 5. Four years hence, the ratio of their ages will be 11 : 10. What is Sagar's age at present?
Answer: A
Let the ages of Kunal and Sagar 6 years ago be 6x and 5x years respectively.
then,\(\frac{ (6x + 6) + 4 }{(5x + 6) + 4}= \frac{11}{10}\)
\(\Rightarrow 10(6x + 10) = 11(5x + 10)\)
\(\Rightarrow 5x = 10\)
\(\Rightarrow x = 2\)
\(\therefore\) Sagar's present age \(= (5x + 6) = 16\) years.