Age based problems are often asked in almost all competitive exams such as IBPS PO, IBPS Clerk, MAT, CAT, XAT, CMAT and GMAT. In this post, you will learn how to solve the Age based problems in the matter of seconds.
Have a look at the following questions
Ex.1 The ages of the
father three 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?
Solution
by conventional method
Let the
present age of son = x yrs.
then, the
present age of father = 5x yrs.
3 years
ago,
7(x-3) =
5x-3
or,
7x-21=5x-3
or,
2x=18
x = 9 yrs.
So, the
son's age is 9 yrs.
Father's
age = 45 yrs
Shortcut
Method:
Son's age =t(x-1) / x-y
In the above example
t= 3 yrs.
X = 7
Y = 5
Putting the values in the above equation
Son’s age = 3 (7-1) / 7-5
= 18/2
=9
And father’s age = 45 yrs.
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Shortcuts for Age based problems
