Question
Total number of students in a college is 960. The ratio of
boys to girls is 3:5. The ratio of boys who passed to those who failed is 7:2. The ratio of girls who passed to those who failed is 4:1. Find the total number of students who passed.Solution
ATQ,
Number of boys = (3/8) × 960 = 360
Number of girls = (5/8) × 960 = 600
Required number of students = (7/9) × 360 + (4/5) × 600 = 280 + 480 = 760
Complete the series by replacing ‘?’
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