50 identical units are purchased at a total price of Rs 550 and \( \frac{1}{5} \) of these units are sold at a loss of 10%. Find the per unit selling price of the remaining units to gain 20% on the whole transaction.
How many integers lie between 8912 and 8922 ?
Rajesh’s daughter’s age is \( \frac{1}{3} \) of Rajesh’s wife’s age. Rajesh’s wife’s age is \( \frac{2}{3} \) of Rajesh’s age, and Rajesh’s age is \( \frac{3}{5} \) of Rajesh’s father’s age. Find the age of Rajesh’s daughter if Rajesh’s father’s age is 60 years.