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Ratio, Proportion
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Ratio, Proportion
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Aptitude miscellaneous
If A : B =
1
:
1
, B : C =
1
:
1
2
3
5
3
then (A + B) : (B + C) is equal to
5 : 8
9 : 10
15 : 16
6 : 15
Correct Option:
C
A : B =
1
:
1
= 3 : 2
2
3
B : C =
1
:
1
= 3 : 5
5
3
A
=
3
B
2
⇒
A + B
=
3 + 2
=
5
B
2
2
B
= 3 : 5 ⇒
C
=
5
C
B
3
⇒
C + B
=
5
+ 1 =
8
B
3
3
∴
A + B
=
5
÷
8
C + B
2
3
=
5
×
3
=
15
= 15 : 16
2
8
16
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