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Question

$$1800$$ boys and $$900$$ girls appeared for an examination. If $$42$$% of the boys and $$30$$% of the girls passed, find
Total number of students passed

Solution
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Number of boys passed the examination$$= 42 /100 \times 1800 = 756$$
Number of girls passed the examination$$= 30 /100 \times 900 = 270$$
Total number of student passed $$= 756 + 270 = 1026$$

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