Out of 8000 candidates, 60% were boys. If 80% of the boys and 90% of the girls passed
the exam, find the number of candidates who failed.
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45
Answer:
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Answered by
42
Answer:
1280
Step-by-step explanation:
There were 8000 candidates:
60% were boy, so the remaining 100% - 60% must be girls.
So,
No. of boys = 60% of 8000 = (60*8000/100) = 4800
No. of girls = 8,000 - 4800 = 3200.
80% of boys passed, means 20% of 4,800 are failed.
Failed boys = 20% of 4800 = (20*4800)/100) = 960
90% of girls passed, means 10% of 3200 are failed,
Failed girls = 10% of 3200 = (10*3200/100) = 320
Failed candidates = 960 + 320 = 1280
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