thelosthippie wrote:
In a certain population, the two most heavily diagnosed diseases are schistosomiasis and malaria. Over the past five years, malaria has accounted for more than half of all disease cases, and schistosomiasis, which accounted for 40% of all disease cases in the community five years ago, accounted for 30% in the past year.
Which of the following must be true on the basis of the statements above?
A. There were fewer cases of schistosomiasis last year than five years ago.
B. The percentage
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