Exercise - 7
In a class test containing 15 questions, 4 marks are given for every correct answer and
(-2) marks are given for every incorrect answer. (i) Bharathi attempts all questions but
only 9 answers are correct. What is her total score? (i) One of her friends Hema attempts
only 5 questions and all are correct. What will be her total score?
Answers
Step-by-step explanation:
Total number of questions = 15
Marks on per question's correct answer= 4
Marks on per incorrect answer = -2
no. of correct answers bharti get =9
total no. of questions she attempted =15
means wrong answers=6
Net marks she got = 9×4+6×-2 = 36-12 = 24
no. of correct answers Hema gave = 5
no. of questions she attempted = 5
Net marks she got = 5×4 =20
Answer:
Step-by-step explanation:
total questions = 15
marks for each correct answer = 4
marks for each incorrect answer= -2
(i)no. questions attemted by bharathi = 15
no. of correct answers=9
so , no. of incorrect answers = 15-9=6
so mar kes obtained by her = (9 x 4)+(6 x -2)
= 36-12
=24marks
(ii) no of questions attempted by Hema = 5
no. of correct answers=5
so her score = 5 x 4 (only if 0 marks are given for unattempted questions )
=20 marks