(E) I've found it by elimination all the other option choices.

So, if (E) is correct, please, explain why
_________________

Too much is not enough...

E for me too..It is easy to reject the other choices but if we insist on explanation here is how i will go

we know more people have hay fever than asthma

so let us take the worst case
A = 100 people
H = 101 people

we also know that out of 100 people with asthma 95 have hay fever so teh percentage in choice E is

95/101 which is qlways less than 95% for the worst case.
_________________

Fear Mediocrity, Respect Ignorance

The overlapped part of two population should be fewer than each of them.

First thing to note is that the answer MUST be true given the facts.

A) We are told that over 95 percent of people who have asthma suffer from hay fever, so it could be 96 percent which shows that hay fever is not a prerequisite for development of asthma, as for this to even be considered the case it should be 100 percent.

B) This is similar to B, but also knowing that asthma is less common than hay fever rules this out.

C)We have no way of proving this from the data given.

D)The number of people with asthma is less common than the number of people with hay fever and 95% of these have hay fever so there is no way of proving whether this is true. As we do not know the percent of people with the more common hay fever who have asthma.

E) This is true as hay fever is much more common (read as there being a LOT more hay fever sufferers) so even if 100 percent of people who had asthma had hay fever, this would not be 95% of hay fever sufferers. Because then the statement would read that they are almost as common.

Simplified (using numbers):
Hay FeverMUCH more common than Asthma (1000 hay fever vs 100 asthma)
95% of Asthma sufferers have hay fever (95 have both)
So less than 95% who have the more common hay fever have asthma (1000 hay fever, 95 both)

Hope this helps
So less than
_________________

Show Thanks to fellow members with Kudos its shows your appreciation and its free

E. tuff one.... in my initial reading I missed asthma is less than Hay Fever....

Yeah, I already know the explaination. Thank you again for the detailed expl.

E sounds right as it states that hay fever is common and there are lot of sufferers .So if you take 100 percent of people who have asthma the percent of people with hay fever would be lower than 95 percent.
_________________

_________________
Giving +1 kudos is a better way of saying 'Thank You'.

Great illustration. This CR problem is basically a math problem. I wonder whether it is common in Real Test.