Question:
and they make more money if you extend your loan

Does it follow that "If you extend your loan, they make more money."?
Answer:
yes

Question:
if it could i mean if they can come along and prove that French fries were the same deal then they have a right to charge for that too i guess

Does it follow that "They can just charge for it, even without any proof that fries are unhealthy."?
Answer:
no

Question:
The Guardian had apologized profusely to Patti Boulaye, an actress seeking election as a Conservative to the new Greater London Assembly, for having misquoted her in an interview.

Does it follow that "Patti Boulaye was never interviewed by The Guardian."?
Answer:
no

Question:
However, it is uncertain whether wealth-based measures are reliable for gauging the growth in the nation's capital stock and whether revaluation of existing assets should count as saving for society as a whole.

Does it follow that "It's not clear if wealth-based measures can be counted on."?
Answer:
yes