Question

A test consists of ‘True’ or ‘False’ questions. One mark is awarded for every correct

answer while ¼ mark is deducted for every wrong answer. A student knew answers

to some of the questions. Rest of the questions he attempted by guessing. He

answered 120 questions and got 90 marks.1. If answer to all questions he attempted by guessing were wrong, then how

many questions did he answer correctly?

2. How many questions did he guess?

3. If answer to all questions he attempted by guessing were wrong and

answered 80 correctly, then how many marks he got?

4. If answer to all questions he attempted by guessing were wrong, then how

many questions answered correctly to score 95 marks?​

Answer 1

Step-by-step explanation:

1.) If answer to all questions he attempted by guessing were wrong then he answered 96 questions correctly

2.) He guessed 24 questions

3.) If 80 is correct then he got 70 marks

4.) 100 questions to be answered correctly for getting 95 marks