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A class of 25 students took a science test.10 students had an average score of 80. The other 
students had an average score of 60. what is the average score of the whole class?

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Mastercute0504viz
(10/25)*100= 40% (15/25)*100= 60% 80*40%=32 60*40%=36 32+36=68 Answer: 68%