Question
Average marks scored by each boy in a class were 80,
whereas that by each girl were 88. If the number of boys is 50% more than the number of girls, then find the average score of each student.Solution
Let the number of girls = 2x.
Thus, the number of boys = 3x. Total marks of boys = 3x × 80 = 240x
Total marks of girls = 2x × 88 = 176x Total marks = 240x + 176x = 416x
Total students = 2x + 3x = 5x Average = 416x ÷ 5x = 83.2
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