Baichung's father is 26 years younger than Baichung's grandfather and 29 years older than Baichung.The sum of the ages of all the three is 135 years.What is the age of each one of them?

A grandfather is ten times older than his granddaughter.He is also 54 years older than her.Find their present ages.

The ages of Rahul and Haroon are in the rati 5:7.Four years later the sum of their ages will be 56 years.What are their present ages?

Represent the following situations in the form of quadratic equations : Rohan's mother is 26 years older than him. The product of their ages (in years) 3 years from now will be 360. We would like to find Rohan's present age.

The present age of the father is twice the sum of the ages of his 2 children. After 20 years, his age will be equal to the sum of the ages of his children. Find the age of the father.

Three friends whose ages form a G.P. divide a certain sum of money in proportion to their ages. If they do that three years later, when the youngest is half the age of the oldest, then he will receive 105 rupees more that the he gets now and the middle friends will get 15 rupees more that he gets now, then ages of the friends are

Sum of the ages of a father and the son is 40 years. If father's age is three times that of his son, then find their respective ages.

A father's age is three times the sum of the ages of his two children. After 5 years his age will be 2 times the sum of their ages. Find the present age of the father.

The age of a man is twice the square of the age of his son . After eight years , the age of the man will be 4 years more than three times the age of his son. Find their present age.

A class has 15 students whose ages are 14, 17, 15, 14, 21, 17, 19, 20, 16, 18, 20, 17, 16, 19 and 20 years. One student is selected in such a manner that each has the same chance of being chosen and the age X of the selected student is recorded. What is the probability distribution of the random variable X? Find mean, variance and standard deviation of X.

Set up an equation in the following cases: Laxmi's father is 49 years old. He is 4 years older than three times Laxmi's age. (Take Laxmi's age to be y years).