The sum of the ages of Sneha and Kishore is 26 years. If 3 years ago, Kishore was \( \frac{2}{3} \)​ times as old as Sneha, then the present age of Sneha is:
If the manufacturer gains 12%, the wholesale dealer gains 15% and the retailer gains 20%, then find the cost of production of a table, the retail price of which is ₹15,456