Question
The Average of marks obtained by 120 candidates in a certain examination is 35. If the average marks of passed candidates is 39 and that of failed candidates is 15, what is the number of candidates who passed the examination?
Answer: Option B
- Let the number of passed candidates be a
Then total marks =>120 x 35 = 39 a + (120 – a) x 15
4200 = 39 a + 1800 – 15 a
a = 100
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- Let the number of passed candidates be a
Then total marks =>120 x 35 = 39 a + (120 – a) x 15
4200 = 39 a + 1800 – 15 a
a = 100
Was this answer helpful ?
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