Please please answer me in detail... please,tomorrow is my exam.
in a test,+3 marks are given for every correct answer and -1 for every in incorrect answer. Sonam attempted all the questions and scored + 20 marks though she got 10 correct answers.
a) how many incorrect answers has she attempted?
b) how many questions were given in the test?
in a test,+3 marks are given for every correct answer and -1 for every in incorrect answer. Sonam attempted all the questions and scored + 20 marks though she got 10 correct answers.
a) how many incorrect answers has she attempted?
b) how many questions were given in the test?
Answers & Comments
total marks scored =20
so she lost 10 marks in negative marking... so 10 wrong questions she has attempted .
total questions =10+10
=20
hope u understand