NIFT PG 2020 Question Paper with solutions

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Question : 9 of 150

Marks: +1, -0

If

A: B=2: 3

and

B: C=3: 7,

then

A+B: B+C: C+A

is equal to

4: 10: 9
5: 8: 9
5: 10: 9
4: 8: 9

Solution:

We have,

A: B=2: 3

B: C=3: 7

∴ \;\; A: B: C=2: 3: 7

Let

A=2 K, B=3 K

and

C=7 K

∴ A+B: B+C: C+A=(2 K+3 K):(3 K+7 K):(7 K+2 K)

=5 K: 10 K: 9 K=5: 10: 9

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