Question

In an Exam, (+3) marks are given for every correct answer and (-1) is given for every

incorrect answer and no marks for not attempting any question. Rana has scored 20

marks. If he has got marks for 12 correct answers, how many questions has he

attempted incorrectly.
stepwise answer​

Answer 1

Answer:

12 correct answer means 12×3=36

she got Mark's 20

then 36-20=16

every incorrect answer marks -1

then 16÷(-1)=16

therefore she attempted incorrectly =16