SOLUTION: there are 20 question the test. for every right answer is 5 cents. for every wrong answer is 3 cents. if I receive 76 cents, how many question did I get right

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Question 967786: there are 20 question the test. for every right answer is 5 cents. for every wrong answer is 3 cents. if I receive 76 cents, how many question did I get right
Answer by josgarithmetic(39623) About Me  (Show Source):
You can put this solution on YOUR website!
y, right answers
x, wrong answers

system%28x%2By=20%2C3x%2B5y=76%29
That is if the 3 cents per wrong answer are not subtracted from the score.
system%283x%2B3y=60%2C3x%2B5y=76%29
%283x%2B5y%29-%283x%2B3y%29=76-60
2y=16
highlight%28y=8%29, the count of right answers

If the wrong answers are supposed to be SUBTRACTED, and all 20 questions are answered, then the system is
system%28x%2By=20%2C-3x%2B5y=76%29