Answer in short method
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total marks for correct ans.=9*4=36,
total for incorrect=(15-9)*(-2)=-12,
her total score=36-12=24.
FOR HER FRIEND, total marks=20-20=0.
total for incorrect=(15-9)*(-2)=-12,
her total score=36-12=24.
FOR HER FRIEND, total marks=20-20=0.
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