Embibe Experts Solutions for Chapter: Arithmetic, Exercise 10: Exercise 10

Seven years ago, the ratio of the ages of A and B is $4:5$. Eight years hence, the ratio of the ages of A and B is $9:10$. What is the difference between their present age in years? 

Seven $\mathrm{years}$ ago, the ratio of the ages of A and B was $4:5$. Eight $\mathrm{years}$ hence, the ratio of the ages of A and B will be $9:10$. What is the sum of their present ages in $\mathrm{years}$? 

After $5 \mathrm{years}$, the father's age will be three times the age of the son. $5 \mathrm{years}$ earlier father's age was $7$ times the age of son at that time. What are the present ages of the father and the son?

Last year my age was a perfect square number. Next year it will be a cube number. What is my present age?

The ratio between present ages of Suman and Somu is $2:1$, If Suman was $15 \mathrm{years}$ older to Somu $8 \mathrm{years}$ back, how old is Somu now?

The respective ratio between the present age of Manisha and Deepali is $5 : x$. Manisha is $9$ Years younger than Parineeta.Parineeta's age after, $9$ Years will be $33$ Years.The difference between Deepali's and Manisha's age is same as the present age of Parineeta, what will come in place of $x$ ?

$5$ years ago, the average age of $P$ and $Q$ was $15$ years. At present, the average age of $P, Q$ and $R$ is $20$ years. What will be the average age of $P, Q$ and $R$ after $10$ years?

The difference between Charles's and Shryia's ages is $6$ years. When they married each other $30$ years ago, $4$ times Charles's age was same as $5$ times the age of Shriya. What is the sum of their present ages?