Question

In a class test (+3) marks are given for every correct answer and (-2) marks are given for every incorrect answer and no marks for not attempting any question:(i) Radhika scored 20 marks. If she has got 12 correct answers, how many questions has she attempted incorrectly?


step by step answer please​

Answer 1

Answer:

are U a student of JV and 7 std tell me

are u A chaitanaya student

Answer 2

Answer:

here da your answer

Step-by-step explanation:

$marks \: given \: for \: one \: correct \: answer \: = 3 \geqslant \\ marks \: given \: for \: 10 \: correct \: answer \: = 3 \: \times 12 = 36 \: \\ radhika \: score \: = \: 20 \: \: \\ marks \: given \: for \: given \: for \: incorrect \: answer \: = \: 36 \: - 20 = 16 \: \\ markes \: given \: for \: one \: incorrect \: answer \: = ( - 2) \: \\ therefore \: number \: of \: incorrect \: answer \: = \: - 16 \div ( - 2)\: \\ = 8$