in a quiz competition (+2) marks are given for every correct answer and (-2) marks for every incorrect answer and no msrks for not attempt any question.
(A) Team A scored 20 marks.If they have 10 correct answer,how many questions did they attempt incorrectly ?
(B) Team B scores -10 marks though they got 10 correct answers.how many questions did they attempt incorrectly?
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A. Team A attempted 0 questions in correctly
B. Team B scores -10 marks
They attempted 10 questions correctly
Their score for correctly answered questions is 20 marks
Let no. of incorrect questions they have attempted is x
Their score for incorrectly answered questions is -2x
=>20-2x=-10
=>2x=30
=>x=15
ThereforeTeam B answered 15 questions incorrectly
HOPE IT HELPS!!
B. Team B scores -10 marks
They attempted 10 questions correctly
Their score for correctly answered questions is 20 marks
Let no. of incorrect questions they have attempted is x
Their score for incorrectly answered questions is -2x
=>20-2x=-10
=>2x=30
=>x=15
ThereforeTeam B answered 15 questions incorrectly
HOPE IT HELPS!!
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