Question

In a class test containing 10 questions, '3' marks are awarded for every correct answer and (-1) mark is for every incorrect answer and 'O' for questions not attempted. (1) Gopi gets 5 correct and 5 incorrect answers. What is his score? () Reshma gets 7 correct answers and 3 incorrect answers. What is her score? (i) Rashmi gets 3 correct and 4 incorrect answers out of seven questions she attempts. What is her score?​

Answer 1

Answer:

Hey

i)  Gopi gets 5 correct and 5 incorrect answers  

   To find his score  

   Since for every correct answer '3 marks are awarded '  

   For every incorrect answer '(−1) marks are awarded '  

   Total Score   =5×3+5×(−1)

                         =15−5

                         =10

ii)  Reshma gets 7 correct answer and 3 incorrect answers  

   To find his score  

   Since for every correct answer '3 marks are awarded'  

   For  Every  Incorrect  Answer   ' (-1)   marks   are   awarded '  

   Total score     =7×3+3×(−1)

                          =21−3

                          =18

iii)   Rashmi gets 3 correct answer and 4 incorrect answers  

     To find his score

     Since for every correct answer '3 marks are awarded '  

     For every incorrect answer '(−1) marks are awarded '  

     Total score    =3×3+4×(−1)

                           =9−4

                           =5

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