Question

pu-z) TEM-17) (29)
4.In a class (+3) marks are given for every correct answer and (-2) marks are given for every
incorrect answer and no marks for not attempting any question. (i) Radhika scored 20 marks. It
she has got 12 correct answers, how many questions has she attempted incorrectly? (11) Mohini
scores -5 marks in the test, though she has got 7 correct answers. How many questions has she
attempted incorrectly?
​

Answer 1

Answer:

I don't know. You know answer

Answer 2

Answer:

i)8ii)13

Step-by-step explanation:

let x be the marks scored for attempting no. of que. that she had been answered incorrectly;

i) 12(3) +x=20

=>36+x=20=>x=20-36=-16

.'.,no. of incorrect que. =-16/-2=8

ii)7(3)+x=-5

=>21+x=-5=>x=-5-21=-26

therefore, no. of incorrect que.=-26/-2=13