Question

in a class test (+3) are given for a correct answer and (-2) marks are given for an incorrect answer and no mark are given for not attempting a question

(i) Radhika scored 20 marks ,if she get 12 answers correct. how many questions she attempted incorrectly?

(ii) mohini scores [-5] marks in the test though she has got 7 answers correct. How many questions she has attempted incorrectly.​

Answer 1

(a) first we will find the marks of correct answer

12×3=36

so,

marks given on correct answer=36

marks scored by Radhika. = 20

marks cut on attempting incorrect answer = 36-20 =16

incorrect answer attempted by Radhika = 16/-2

= 8 ques

Now do the b by yourself

If you have any problem then ask me

Answer 2

Answer:

(i) 8, (ii) 13

Step-by-step explanation:

Here is the solution.

Hope it helps!