Arihant Expert Team Solutions for Exercise 2: PRACTICE QUESTIONS for Phase I

The average age of $8$ men is increased by $2 years$ when two of them whose ages are $21$ and $23 years$ are replaced by two new men. The average age of the two new men is:

The ages of Priya and Anuj are in the ratio $8 : 15$. After $9$ yr, the ratio of their ages will be $11 : 18$. What is the difference between their ages?

The ratio of the ages of a father and his son $10$ yr, hence will be $5:3$ while $10$ yr ago, it was $3:1$. The ratio of the age of the son to that of his father today, is :

$1$ $\mathrm{year}$ ago, a man was $7$ times as old as his son. Now, his age is equal to the square of his son's age. The present age of the man will be:

 Rakhi got married 6 yr ago. Today her age is $1\frac{1}{4}$  times her age at the time of marriage. Her son's age is $\frac{1}{10}$ times her age. Her son is:

 The present ages of A, B and C are in the proportion $10 : 11 : 12$. $5 yr$ ago, the sum of their ages was $150$. Their present ages are:

Ratna's father was $38 yr$ old when she was born while her mother was $36 yr$ old when her brother $4 yr$ younger than she was born. What is the difference between the ages of her parents?

The ratio of the present age of Manoj to that of Wasim is $3 : 11$. Wasim is $12$ yr younger than Rehana. Rehana's age after $7$ yr will be $85$ yr. What is the present age of Manoj's father, who is $25$ yr older than Manoj?