On a math test, Johnny made a raw score of 95 on a 40 question test. The correct answers were given 5 points each while incorrec
t answers deducted 2 points each. If Johnny answered all of the questions, how many questions did Johnny correctly answer?
1 answer:
X - the number of questions he answered correctly
y - the number of questions he answered incorrectly
There were 40 questions on the test.

The correct answers were given 5 points each, the incorrect answers were given -2 points each. He made a score of 95.

Set 40-x and (-95/2)+(5/2)x equal to each other:

Johnny answered correctly
25 questions.
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