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Quick Tips and Tricks

1) If the current age of a person be X, then

- age after n years = X + n

- age n years ago = X � n

- n times the age = nX

- If ages in the numerical are mentioned in ratio A : B, then A : B will be AX and BX

2) If sum of ages of x and y is A and ratio of their ages is p : q respectively, then u can determine age of y by using the formula shown below:

Age of y = Ratio of y � sum of ages Sum of ratios

Age of y = q � A (p + q)

Points to Remember:

- After reading the question, assume unknown age by some variable x.

- Convert the statements in the question into mathematical equations.

- Calculate the unknown by solving the equations and the obtained value must satisfy the conditions given in the problem.

Father is aged three times more than his son Ronit. After 8 years, he would be two and a half times of Ronit's age. After further 8 years, how many times would he be of Ronit's age?

A. 2 times B. 2 1 times 2 C. 2 3 times 4 D. 3 times

The sum of ages of 5 children born at the intervals of 3 years each is 50 years. What is the age of the youngest child?

A. 4 years B. 8 years C. 10 years D. None of these

A father said to his son, "I was as old as you are at the present at the time of your birth". If the father's age is 38 years now, the son's age five years back was:

A. 14 years B. 19 years C. 33 years D. 38 years

A is two years older than B who is twice as old as C. If the total of the ages of A, B and C be 27, the how old is B? A. 7 B. 8 C. 9 D. 10 E. 11

Present ages of Sameer and Anand are in the ratio of 5 : 4 respectively. Three years hence, the ratio of their ages will become 11 : 9 respectively. What is Anand's present age in years?

A. 24 B. 27 C. 40 D. Cannot be determined E. None of these

What is John�s present age, if after 10 years his age will be 5 times his age 5 years back.

a. 6.2 years b. 7.7 years c. 8.7 years d. 10 years

Correct Option: (c)

Rahul is 15 years elder than Rohan. If 5 years ago, Rahul was 3 times as old as Rohan, then find Rahul's present age.

a. 32.5 years b. 27.5 years c. 25 years d. 24.9 years

Correct Option: (b)

One year ago, ratio of Harry and Peter age�s was 5 : 6 respectively. After 4 years, this ratio becomes 6 : 7. How old is Peter?

a. 25 years b. 26 years c. 31 years d. 35 years

Correct Option: (c)

Age of mother 10 years ago was 3 times the age of her son. After 10 years, mother�s age will be twice that of his son. Find the ratio of their present ages.

a. 11 : 7 b. 9 : 5 c. 7 : 4 d. 7 : 3

Correct Option: (d)

Sharad is 60 years old and Santosh is 80 years old. How many years ago was the ratio of their ages 4 : 6?

a. 10 years b. 15 years c. 20 years d. 25 years

Correct Option: (c)

The ratio of Rohan�s age 4 years ago and Rahul�s age after 4 years is 1 : 1. If at present, the ratio of their ages is 5 : 3, then find the ratio between Rohan�s age 4 years hence and Rahul�s age 4 years ago.

a. 1 : 3 b. 3 : 1 c. 4 : 3 d. 3 : 4

Correct Option: (b)

5 years ago, sister�s age was 5 times the age of her brother and the sum of present ages of sister and brother is 34 years. What will be the age of her brother after 6 years?

a. 12 years b. 13.5 years c. 15 years d. 20 years

Correct Option: (c)

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