Please help with the following problem:
The score S on a Math 012 test varies directly as the number of correct responses N. Jules answers 29 questions correctly and earns a score of 87. What would Jules’ score have been if he had answered 25 questions correctly.
THANK YOU!
As this involves DIRECT VARIATION, you can set up the problem as a proportion.
With S being his score when he answers 25 questions correctly, we get: 
OR
With a score of 87 and having gotten 29 correct, it follows that each question is worth 
, or 3 points.
As each question is worth 3 points, his score, if 25 are correct will be: 
