GATE EE 2019 Set 1 — Question 7
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General Aptitude → Quantitative Aptitude → Ratios, Percentages, Powers, Exponents & Logarithms
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Question
The ratio of the number of boys and girls who participated in an examination is 4:3. The total percentage of candidates who passed the examination is 80 and the percentage of girls who passed is 90. The percentage of boys who passed is ________.
Correct answer
(B) 72.50
Solution
Let the number of boys be and the number of girls be .
Total number of candidates .
Total candidates who passed of .
Number of girls who passed of .
Number of boys who passed .
Percentage of boys who passed .
Total number of candidates .
Total candidates who passed of .
Number of girls who passed of .
Number of boys who passed .
Percentage of boys who passed .
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