Question

19. In an Examination, (+2) marks are given for every correct answer and (-0.5) marks is given

for every wrong answer and 0 for non-attempting any question.

(a) Latika scores 30 marks. If she got 20 correct answers, how many questions she

attempted incorrectly?

(b) Sara scores -4 marks if she got 3 correct answers, how many were incorrect?​

Answer 1

Step-by-step explanation:

30 x 2 = 60

60 - the sum of two numbers

60 - 50 = 10 answers are in correct

b 3 x 2 = 6

18 questions were incorrect