In a test (+5) marks are given for every correct answer and (-2)
marks are given for every incorrect answer
i) Rohan answered all questions and scored 24 marks though
he got 8 correct answers.
ii) Smitha answered all questions and scored (-15) marks though
he got 3 correct answers. How many incorrect answer had they
attempted?
Answers
Answered by
24
Step-by-step explanation:
Let incorrect answer attempted be x
correct marks + incorrect marks = total marks
I) 8(5) + x(-2) = 24
40 - 2x = 24
-2x = 24-40
-2x=-16
x=8
II) 3(5) + x(-2) =-15
15 -2x = -15
-2x= -30
x= 15
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