In a test (+5) marks are given for every correct answer and (-2) marks are given for every incorrect answer
(a) Rohan answered all questions and scored 24 marks though he got 8 correct answers.
b) Smitha answered all questions and scored (-15) marks though he got 3 correct answers. How
many incorrect answers had they attempted?
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Answer:
Rohan attempted 8 wrong answers.
Smitha attempted 15 wrong answers.
Step-by-step explanation:
Total score = [no. of right answers x (+5)] + [no. of wrong answers x (-2)]
24=(8x5) + (-2x)
x=8
-15=(3x5) + (-2x)
x=15
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