shubhangi wrote:
i dont know...how A is possible..it says in the passage that people in US undergo 40% MORE than canada
and 1st statement says
patients in the United States do not have a greater need for surgery than do patients in Canada.
that means it is opposite of what passage says.. i am CONFUSED
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Although the ratio of physicians to total population is about the same in the United States and Canada, the United States has 33 percent more surgeons per capita. Clearly, this is the reason people in the United States undergo 40 percent more operations per capita than do Canadians.
The explanation given above rests on an assumption that:
(A) patients in the United States do not have a greater need for surgery than do patients in Canada.
(B) the population of the United States is not larger than that of Canada.
(C) United States patients sometimes travel to Canada for certain kinds of surgery.
(D) General practitioners in the United States do not as a rule examine a who is a candidate for surgery before sending the patient to a surgeon.
(E) There are no unnecessary surgical operations performed in Canada.
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Here is an explanation, which may help you.
1. per capita surgeons --> for 1000 people, how many surgeons (it could be 100 people or 10000 people)
Assume (for the explanation purpose) in Canada, for 1000 people, 10 surgeons. So, in US, for 1000 people, 14 surgeons (33% more surgeons, rounded to 40%)
2. The conclusion of the argument is: Since per capita surgeons are more in US than in Canada, more surgeries (40% more operations) are happening in US. In my opinion these % numbers are not that important for the argument's conclusion. This conclusion is directly connecting per capita surgeons to the number of operations. If we bring in any new information that would make us believe that, yes more surgeons means more operations, then that choice is the 'assumption'.
A) if patients in US need more surgeries than do patients in Canada, then the total number of surgeries in US will be more than surgeries in Canada, so we can't directly correlate 'more surgeons to more surgeries'. If this is the case, then the conclusion is invalid. Correct answer