BTGmoderatorDC wrote:A music festival took place over two days, Saturday and Sunday. What percent of attendees only attended on Saturday?
(1) 40% of attendees attended both days.
(2) 70% of attendees attended on Sunday.
Anyone who attended the festival must have attended only Saturday, only Sunday, or both days.
Let the total number of attendees = 100.
Statement 1: 40% of attendees attended both days.
No way to determine how many attendees attended only Saturday.
INSUFFICIENT.
Statement 2: 70% of attendees attended on Sunday.
Since 70 of the 100 attendees attended Sunday, the remaining 30 did NOT attend Sunday and thus must have attended only Saturday.
SUFFICIENT.
The correct answer is
B.
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