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Question

What is the total number of candidates at an examination if 31% fail and the number of those who passed exceeds the number of those who failed by 247?

A
605
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B
560
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C
650
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D
None
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Solution

The correct option is C 650
Failed candidates = 31 %
Passed candidates = 69%
we have
69x10031x100=247
38x100=247
x=650

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