The average weight of all the 200 employees in an office is 68.2 kg, where \(\frac{2}{5}\) of the employees are ladies and the ratio of the average weight ofa man to that of a woman is 7 : 5. Find the average weight of the female employees.
The population ofa town is increasing at the rate of 10% per year. If the present population of the town is ₹1,00,000, what will its population be 2 years from now?
Raju sells an object at 20% below its cost price. If he sold it for ₹450 more, he would have made a profit of 25%. What is the original selling price of the object?