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Byju's Answer
Standard X
Mathematics
Elimination Method of Finding Solution of a Pair of Linear Equations
Ages of two f...
Question
Ages of two friends are in the ratio
2
:
1
. If sum of their ages is
51
then their ages are
A
34
yrs,
20
yrs
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B
34
yrs,
17
yrs
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C
20
yrs,
10
yrs
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D
30
yrs,
15
yrs
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Solution
The correct option is
B
34
yrs,
17
yrs
Given ages in the ratio
2
:
1
Thus let their ages be
2
x
and
x
Given, the sum of their ages is
51
Therefore,
2
x
+
x
=
51
⇒
3
x
=
51
⇒
x
=
17
Hence, required age's are
34
yrs and
17
yrs.
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