The current ages of Sudhir and Ashish are in the ratio 5 ∶ 7. Twelve years ago, the ratio of their ages was 1 ∶ 2. What will be the age of Sudhir after five years from now?
A man invests a total sum of Rs. 10,000 in a company. A part of the sum was invested at 10% and the rest at 15% SI. If total interest in 2 years is Rs. 2,400, the amount invested at 15% is: