Problems Based on Ages

111,111,111 is divisible by ,

The average of $10$ numbers is $40.2$. Later it is found that two numbers have been wrongly added. The first is $18$ greater than the actual number and second number added is $13$ by mistake instead of $31$. Find the correct average.

Three numbers which are co-prime to one another are such that the product of the first two is $551$ and that of the last two is $1073$. The sum of the three number is _____.

The sum of the present ages of father and son is $80$$years$. $4$$years$ ago, the ratio of their age was $2:1$. Father's present age will be?

$B$ is twice as old as $A$ but twice younger than $F$. $C$ is half the age of $A$ but is twice older than $D$. Who is the second oldest $?$

The ratio of Rama's age and Shyama's age is $5:1$. If the product of their ages is $125$, what will be the ratio of their ages after $3$ years?

Hari is twice as old as Johnny, who is three years older than Rahul. If Hari's age is five times Rahul's age, how old is Johnny?

Father's age is $4$ times that of his son. $5$ years back, it was $7$ times.Father 's age now is

In a group of buffaloes and ducks, the number of legs are $24$more than twice the number of heads. What is the number of buffaloes in the group?

What should come in place of question mark in the following given series?

$13, 13, 65, 585, 7605, 129285, ?$

Four years ago the ratio of the ages of A and B was $2 : 3$and after $4$ years it will become$5 : 7$.  Find they present ages.

Mrs. Lata was $3$ times as old as her son $8$ years ago. Their total age is $64$ years now. How old (in years) is Mrs. Lata now?

Which of the following order in descending order --

$16.04.1970$

$15.05.1970$

$18.06.1980$

$20.04.1970$

$25.05.1970$

$1$. $16.04.1970$

$2$.$15.05.1980$
$3$. $18.06.1980$

$4$. $20.04.1970$
$5$.$25.05.1970$

Father's age is twice that of his son's age. Thirty years back, father's age was four times that of son's age. What is the age of son now?

The ages of Samina and Suhana are in the ratio of $7 : 3$ respectively.After $6$ Years the ratio of their ages will be $5 : 3$. What is the difference in their ages?

What will be the day on the first January, $2015$, If the first of January is Tuesday in $2014$ ?

The average age of boys in the class is twice the number of girls in the class. The ratio of boys and girls in the class of $50$ is $4 : 1$. The total of the ages (in years) of the boys in the class is-

Ram's present age is three times his son's present age and two-fifth of his father's present age. The average of the present ages of all of them is $46$ years. What is the difference between the Ram's son's present age and Ram's father's present age?

The present ages of Gaurav and Saurav are in the ratio of $6:7$ respectively. After $6$ years their ages will be in the ratio of $15:17$ respectively. What is Gaurav's present age?

$9$ and $45$ are first and second terms respectively in a continued proportion, then the third proportional is _____.