Data Sufficiency

If Tammy has 80 Spanish-speaking and 70 English-speaking friends, does she have more than 100 friends in all?

(1) Among Tammy's friends, for every 9 friends who speak both English and Spanish, there are 2 who speak neither English nor Spanish.
(2) 40 of Tammy's friends speak at least two languages.

The question is to find out if Tammy has at least 100 friends.
My initial analysis is more the number of people common between the 2 groups fewer will be Tammy's friend.

1) Among Tammy's friends, for every 9 friends who speak both English and Spanish, there are 2 who speak neither English nor Spanish

The first statement states that the number of people who falls in both the groups should be a multiple of 9. Hence
People who speak both the languages = 9*7 = 63 (as the max number of English speaking people is 70).
People who don't speak any language = 2*7 = 14
People who speak English = 7
People who speak Spanish = 17

Total number of friends = 101
So Tammy has more than 100 friends.


2)40 of Tammy's friends speak at least two languages.
I am confused here whether statement wants to state
a) At least 40 people speak 2 languages or
b) There are 40 people who speak at least 2 languages hopefully which includes English and Spanish.

I am going with the second option:
People who speak both the languages = 40
People who speak English = 30
People who speak Spanish = 40

Total number of friends = 110
So Tammy has more than 100 friends.

Therefore the answer should be D


Cheers,
GG

Fantastic! OA=D