Question

In a test (+5) marks are given for every correct answer and (-2) for incorrect
answer
(i) Radhika answered all the questions and scored 30 marks though she got
10 correct answers.
(ii) Jay also answered all the questions and scored (-12) marks though he got
4 correct answers. How many incorrect questions did they attempt?

Answer 1

Answer:

i) 10 x 5 = 50 so 20 marks left

20/2 = 10 incorrect answers

ii) 4 x 5 = 20 so 20+12 = 32 /2 = 16

16 incorrect answers