SOLUTION: If I received a score of 92% and got 11 questions right, how many questions were on the test? Thank you for your help. Lori

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Question 774995: If I received a score of 92% and got 11 questions right, how many questions were on the test?
Thank you for your help.
Lori
Answer by jojo14344(1513) About Me  (Show Source):
You can put this solution on YOUR website!


Remember, Score+=+correct_answers%2Ftotal_questions*100%25
.
Given:
score=92
correct_answers=11
total_questions+=unknown=X
.
Substituting,
92=%2811%2Fx%29%28100%29, cross multiply
92x=1100 ---> cross%2892%29%28x%29%2Fcross%2892%29=1100%2F92
x=12, answer
.
Check,
score=%2811%2F12%29%28100%29
score=92
.
Thank you,
Jojo