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If a : b : c = 3 : 4 : 7, then the ratio...

If `a : b : c = 3 : 4 : 7`, then the ratio `(a + b + c): c` is equal to

A

`2 : 1`

B

`14 : 3`

C

`7 : 2`

D

`1 : 2`

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The correct Answer is:
A
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