20 14 Chongqing senior high school entrance examination mathematics a - Training Enrollment Network

20 14 Chongqing senior high school entrance examination mathematics a

The number of participants in the senior high school entrance examination is: 60÷20%=300.

The percentage of the first-class product is 90300× 100%=30%.

Therefore, the central angle of the sector representing Grade A is 360× 30% = 108.

So the answer is: 108.

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