Question

6. In a class test (+4) marks are given for every correct answer and (-1) marks are given for every incorrect answer and no marks for not attempting any question. (a) Ridhima scored 25 marks. If she got 9 correct answers, how many questions has she attempted incorrectly.(b)mohan score -10marks in the test though he got 5 correct answer How many questions has he attempted incorrectly
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Answer 1

Answer:

marks given for every correct answer = 3

marks given for 12 correct answer = 12\times3\ =\ 3612×3 = 36

radhika obtained 20 marks in the class testt

therefore, marks obtained for incorrect answer = 20 -36

= -16

therefore, marks given for one incorrect answer = -2

so, no of incorrect answer = -16\times\frac{-1}{2}\ \ \ =\ 8\−16×

2

−1

= 8

Thus, radhika has attempted = 8 incorrect questions

(ii) Marks given for seven correct answer = 3\times7\ =21\3×7 =21

Mohini scores = -5

Marks obtained for incorrrect answer = -5-21 = -26

now, marks given for one incorrect answer = -2

therefore, no of incorrect answer Mohini has attempted = -26\times\frac{-1}{2}\ \ =13\ incorrect\ question−26×

2

−1

=13 incorrect question

Step-by-step explanation:

pla mark a brainlist

Answer 2

Answer:

ne amma pukuuuuuuuuuuuuuuuuuu

Step-by-step explanation:

sula seeku