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In a class of 35 students, 25 girls averaged 92% on the last test, while the 10 boys averaged 85% on the same test. What is the average for the entire

class on this test?


The total avg of girls =92%............25X92
total avg of boys = 85%.................10X85
so the sum of the marks=(25X92)+(10X85)=3150
total avg=3150/35=90%
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