Problems on Ages Formulas
This is very important part of any exam because several
questions are asked on the basis of Problems on Ages Formulas. To beat all the
sums
perfectly in tine limit candidates need to learn all the formulas given on
this web page. Appliers who are busy in Bank/SSC/UPSC exams preparation they
will have to learn shortcuts tricks to solve the Problems on Age Formulas here.
Almost all competitive exams possess Quantitative Aptitude section in which
questions related to time, distance and age formulas are being asked. Students
who are not in touch of maths since beginning they have problems on age
formulas at the time of examination because they do not know the important
short tricks.
To take over the difficulty cones in such types of questions
each and every applier will have prepare the illustrative examples based on the
formulas and shortcuts to complete the question paper at a given time period.
To increase the score it is necessary for appellants to practice the formulas
daily by giving the enough time. First of all candidates will have to create
effective time table and start from important topics and also go with sample and
model papers. Go guys read given basic concept on problem of ages, important
illustrations and important shortcuts tricks to crack Bank/SSC/UPSC exams and
attempt all the questions to get full marks. All the best!!
Shortcuts Tips & Tricks To Solve Problems
Before learning the tricks know below given concepts-
Basic Concept for
problems on ages
1) If the present age of ‘A’ is ‘x’ years, then
‘n’ years ago => Age of ‘A’ was (x-n) years.
‘n’ years after => Age of ‘A’ will be (x+n) years.
2) In general, at the starting of the solution we have to
assume the present age of one person. It is better to assume the present age =
‘x’ years.
3) So I advise you to assume the age of the younger person =
‘x’ years.
4) If the present age ‘A’ and ‘B’ are ‘x’ and ‘y’ years
respectively, then
‘n’ years ago => Age of ‘A’ and ‘B’ were (x-n) and (y-n)
years respectively.
‘n’ years after => Age of ‘A’ and ‘B’ will be (x+n) and
(y+n) years respectively.
5) The age difference between you and your friend is let’s
suppose 6 years. And after 10 or 15 years this will be same, because clock will
run equally for both of you.
Important Examples for Aptitude Section
Question 1- The
age of the father 3 years ago was 7 times the age of his son. At present, the
father’s age is five times that of his son. What are the present ages of the
father and the son?
Answer- Let the
present age of son = x yrs
Then, the present age of father = 5xyr
3 years ago,
7(x – 3) = 5x – 3
Or, 7x – 21 =5x – 3
Or, 2x =18
x = 9 yrs
Therefore, son’s age = 9 years
Father’s age = 45 years.
Question 2- At
present, the age of the father is five times the age of his son. Three years
hence, the father’s age would be four times that of his son. Find the present
ages of the father and the son.
Answer- Let the
present age of son = x yrs
Then, the present age of father = 5x yrs
3 yrs hence,
4(x+3) = 5x+3
Or, 4x + 12=5x +3
x= 9yrs.
Therefore, son’s age = 9 yrs and father’s age = 45 yrs.
Question 3- Three
years earlier, the father was 7 times as old as his son. Three years hence, the
father’s age would be four times of his son. What are the present ages of the
father and the son?
Answer- Let the
present age of son = x yrs and the present age of father = y yrs
3 yrs earlier, 7(x – 3) = y – 3 or, 7x – y =18…………. (i)
3 yes hence, 4(x+3) = y +3
Or, 4x +12 = y + 3 or, 4x – y = - 9 ………… (ii)
Solving (1) & (2) we get, x = 9 yrs & y =45 yrs.
Question 4- The
sum of the ages of a mother and her daughter is 50 yrs. Also 5 yrs ago, the
mother’s age was 7 times the age of the daughter. What are the present ages of
the mother and the daughter?
Answer- Let the
age of the daughter be x yrs.
Then, the age of the mother is (50x – x) yrs
5 yrs ago, 7(x – 5) = 50 – x – 5
Or, 8x = 50 – 5 +35 = 80
x =10
Therefore, daughter’s age = 10 yrs and mother’s age = 40 yrs.
Question 5- The
sum of the ages of a son and father is 56 yrs. After 4 yrs, the age of the
father will be three times that of the son. What is the age of the son?
Answer- Let the
age of the son be x yrs.
Then, the age of the father is (56 – x) yrs.
After 4 yrs, 3(x+4) = 56 – x +4
Or, 4x =56 +4 – 12 = 48
x = 12 yrs
Thus, son’s age = 12 yrs.
Question 6- Lina
got married 8 years ago. Today her age is 9/7 time her age at the time of her
marriage. At present her daughter’s age is 1/6 of her age. What was her
daughter’s age 3 years ago?
Answer- Let’s
assume present age of Lina = x yrs.
Hence, x = (x-8) * 9/7 => x=36 years.
So present age of daughter = 1/6 * 36 => 6 years.
3 years age of daughter = 6-3 = 3 years.
Question 7- The
age of Rahul and Amit are in the ratio of 8:7. After 10 years the ratio of their
ages will be 13:12. What is the difference in years between their ages?
Answer- Let’s
assume the present age of Rahul and Amit = 8x and 7x
After 10 years,
(8x+10)/(7x+10) = 13/12
We get x=2 years.
So difference in age 8x – 7x = 16 – 14 = 2 years.
Question 8- The
total age of Ram and Shyam is 10 years more than that of total age of Shyam and
Mohan. Mohan is how many years younger than Ram?
Answer- R + S = S
+ M +10 => R = M + 10 => M = R -10
Hence Mohan is 10 years younger than Ram.
Important Formula for Ages Problems:
Counting of Odd
days:
Reminder:
Dear participants stay tuned with ejobhub to get other such articles.
Take a Look on Below Table
0 comments:
Post a Comment