Question

in a test +3 marks are given for every correct answer and - 1 mark are given for every incorrect answer. sona attempted all the questions and scored + 20 marks though she got 10 correct answers (i) how many incorrect answers has she attempted (ii) how many questions were given in the test​

Answer 1

Answer:

hey ur answer is 10.here is it answer

Answer 2

Answer:

(I) 10 incorrect answer she has attempted.

(II) total 20 questions were given in test.

Step-by-step explanation:

Sona got 10 correct answer so that she got 30 marks .But she got 20 marks.

for a incorrect answer -1mark given.

incorrect answer got by Sona =30-20=10

so the total number of questions were given =10+10=20