in a certain examination the number of those who passed was 4 times a number of those who failed. If there had been 35 fewer candidates and 9 more had failed,candidates would have been 2 ratio 1 ,then the total number of candidates was
in a certain examination the number of those who passed was 4 times a number of those who failed. If there had been 35 fewer candidates and 9 more had failed,candidates would have been 2 ratio 1 ,then the total number of candidates was
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Answer:
155
Step-by-step explanation:
Let number of failed students = x
number of passed students = 4 x
total students = x + 4 x = 5 x
If there had been 35 fewer students appeared and 9 more had failed,
total students = 5 x − 35
number of failed students = x + 9
passed students = ( 5 x − 35 ) −( x + 9 ) = 4x − 44
( 4 x − 44 ) : ( x + 9) = 2 : 1
2 ( x + 9 ) = 4 x − 44
2 x + 18 = 4 x − 44
2 x = 62
x = 31
total students was 5 x = 5 X 31 =155
Answer:
155
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