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Byju's Answer
Standard IX
Mathematics
Ratio and Proportion
If P:Q=12:1...
Question
If
P
:
Q
=
1
2
:
1
3
and
Q
:
R
=
1
1
2
:
1
1
3
, find
P
:
R
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Solution
P
Q
=
1
2
1
3
=
3
2
⇒
Q
=
2
P
3
Q
R
=
1
1
2
1
1
3
=
3
2
4
3
=
3
2
×
3
4
=
9
8
⇒
2
P
3
R
=
9
8
⇒
P
R
=
27
16
.
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0
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