gmat prep Q

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Source: — Data Sufficiency |

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by krazy800 » Thu Oct 02, 2008 10:27 am
its given in the question that every german speaker speaks english so german speakers are subset of english speakers..

as far as the problem goes..

let the german speakers be X

there fore

(200-20)=60+70-N(EandS)

C is the answer..
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