in a test 5 marks are given for every correct answers (-2) marks for every incorrect answer. a]gowri answered all the question and scored 30 marks though she got 10 correct answers. b] yashas answered all the questions and scored (-12) marks though he got 4 correct answers. how many incorrect answers had they attemted.
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Step-by-step explanation:
for gowri,
number of marks awarded for correct answers=5*10
=50 marks
total marks that she got=30marks
number of incorrect answers=total marks she got-marks got for correct answers/number of marks for each incorrect answer
=30-50/-2
=10
for yashas,
number of marks awarded for correct answer=20marks
total marks that he got=-12 marks
number of incorrect answers=total marks he got-marks got for correct answers/number of marks for each incorrect answer
=-12-20/-2
=-32/-2
=16
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