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Source: — Data Sufficiency |
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by ronniecoleman » Thu Dec 25, 2008 11:08 am
Ration == stocks/ ( stocks + bonds)

Ratio increased so either stock increased or denominator decreased.

Insuff

2. stock + bonds increased ..

it can be bonds which increased
so insuff

But combining both

stocks have to increase so as to make 1 & 2 true...

Hence IMO C
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by cramya » Fri Dec 26, 2008 12:03 am
Nsharma,

Refer to

https://www.manhattangmat.com/forums/ove ... -t598.html


Emily,one of the Manhtatan gmat instructors has provided an excellent explanation. This way we can all understand more about ratios also....



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Cramya
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by cramya » Fri Dec 26, 2008 12:24 am
Different approach with numbers:

Refer to parallel chase's explanation here:
https://www.beatthegmat.com/gmat-prep-ratio-t14023.html
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