Question
40% of the students in a class are from India and 50%
are girls. If 25% of the Indian students are girls, what percentage of non-Indian students are boys?Solution
Let total number of students be x. Total students from India = 0.4x Total students from non-India = 0.6x Total number of girls students = 0.5x and total number of boys students = 0.5x Number of Indian girls students = 0.25 × 0.4x = 0.1x Number of non-Indian girls students = 0.5x - 0.1x = 0.4x Number of non-Indian boys students = 0.6x - 0.4x = 0.2x Non-Indian boys students % = (0.2x/0.6x) × 100 = 33.33%
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