SOLUTION: the ratio of students who passed their maths exam to those who have not is 8:5. 18 more students passed than didn't. how many students passed their maths exam.

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Question 874482: the ratio of students who passed their maths exam to those who have not is 8:5.
18 more students passed than didn't.
how many students passed their maths exam.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi

Let x represent the constant of proportionality

8x -5x = 18

  3x = 18

   x = 6

30 did not pass (48 passed)