in a class has containing 20 question 6 marks are awarded for every correct and (- 2) are awarded for every incorrect answer and 0 for answer not attempt. 1 ritas 9 correct answer and 11 incorrect . Find her score.
2 sumit scored 36marks thought he got 8 correct answers . How many questions had he attempted incorrectly ?
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Step-by-step explanation:
1.Rita's no. of correct answered questions = 9
Marks got marks for correct answer = 9*6
=> 54 marks
Rita's no. of incorrect answered questions = 11
Marks got marks for correct answer = 11*(-2)
=> -22 marks
Total marks = 54 + (-22)
= 32 marks
2. Let no. of incorrect answers = x
Marks from correct answers : 8*6 = 48
Marks from I correct answers : x*(-2) = -2x
=> 48 + (-2x) = 36
=> -2x = 36-48
=>. -2x = -12
=>. x = -12/-2
=>. x = 6
No. of questions attempted incorrect = 6
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