in an examination 65% of total number of examinees passed.if the numbers of failures is 17% more than the number of candidates not appeared in the examination then total number of passed candidates is A. 620 B.310 C.106 D.403
Answers
Let the number of all the candidates be x.
Therefore the number of those who passed will be:
65% of x = 65/100 × x = 0.65x candidates
The percentage of the remaining candidates is 100% - 65% = 35%
The percentage of those who failed will b:
35% - 17% = 18
18%/2 = 9%
9% + 17% = 26%
Therefore those who failed were 26% of the candidates and those who did not turn up were 9%.
The number of those who failed:
26% of x = 26/100 x = 0.26x
The number of those who did not turn up:
9% of x = 9/100 x = 0.09x
In this question you need at least a figure that correlates to one of the groups of candidates to solve it.
If the candidates who failed were 420, then those who passed were:
If 26% = 420
Then 65% = 420 × 65 /26 = 1050
And the number of those who failed = 420 × 9/26 = 146
⇒This used as an example on how to work out such a question.
Please help to solve it