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Byju's Answer
Standard VI
Mathematics
Finding Unknown
Age of arun i...
Question
Age of arun is 4 times as his son's age .Before 5 years arun age is 9 times his sons age .Find the present age
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Solution
Dear student
Let
the
age
of
Arun
'
s
son
be
x
years
Then
Age
of
Arun
will
be
4
x
years
5
years
ago
:
Arun
'
s
son
'
s
age
will
be
x
-
5
years
Arun
'
s
age
will
be
4
x
-
5
years
A
.
T
.
Q
4
x
-
5
=
9
x
-
5
⇒
4
x
-
5
=
9
x
-
45
⇒
9
x
-
4
x
=
45
-
5
⇒
5
x
=
40
⇒
x
=
8
So
,
Arun
'
s
son
'
s
present
age
will
be
8
years
and
Arun
'
s
present
age
will
be
=
4
×
8
=
32
years
Regards
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