In an examination, 42 percent of students failed in Mathematics and 52 percent failed in Science. If 17 percent failed in both subjects, find the percentage of those who passed in both subjects.
A23% ✓ Correct
B25%
C27%
D30%
Correct answer: (A) 23%
Explanation
23 percent passed in both subjects.
failed in at least one = 42 + 52 - 17.
= 77 percent.
passed both = 100 - 77.
= 23 percent.
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