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Byju's Answer
Standard VIII
Mathematics
Reducing Equations to Simpler Form
The sum of th...
Question
The sum of the present ages of Ram and Mohan is 60 years. In 8 years Ram will be 5 years older than three times as old as Mohan was three years ago. Find their Present Ages.
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Solution
Let
the
present
age
of
Ram
=
x
yrs
Let
the
present
age
of
Mohan
=
y
yrs
Now
x
+
y
=
60
.
.
.
.
.
.
1
x
+
8
=
3
y
-
3
+
5
⇒
x
+
8
=
3
y
-
9
+
5
⇒
x
-
3
y
=
-
12
.
.
.
.
.
.
2
Subtracting
2
from
1
,
we
get
4
y
=
72
⇒
y
=
18
Now
,
from
1
,
we
get
x
+
18
=
60
⇒
x
=
60
-
18
=
42
So
,
present
age
of
Ram
=
42
yrs
present
age
of
Mohan
=
18
yrs
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