Question

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?

Answer 1

as she got 10 correct answers so marks obtained
$3 \times 10 = 30$
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

Answer 2

Step-by-step explanation:

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