Question

in a class test containing 15 questions.4 marks are given for every correct answers and -2 marks are given for incorrect answers.Harry attempts all questions but only 9 of her answers are correct.What is her total score?

Answer 1

Let's gather the data required from the data given.

There are 15 questions in a class test.

4 marks were awarded for every right answer and 2 marks were cut for every wrong answer.

Harry attempts all 15 questions but succeeds in getting 9 correct answers only.

Solution:

The marks awarded for a right answer is 4 marks.

So, for 9 right answers she gets 4(9)=36 marks.

The marks deducted for every wrong answer is 2.

So,for 15-9=6 wrong answers -2(6)=-12 marks are deducted.

So, now her total marks are 36+(-12)=24.

Therefore, Harry scored 24 marks.

Answer 2

Answer:

Let's gather the data required from the data given.

There are 15 questions in a class test.

4 marks were awarded for every right answer and 2 marks were cut for every wrong answer.

Harry attempts all 15 questions but succeeds in getting 9 correct answers only.

Solution:

The marks awarded for a right answer is 4 marks.

So, for 9 right answers she gets 4(9)=36 marks.

The marks deducted for every wrong answer is 2.

So,for 15-9=6 wrong answers -2(6)=-12 marks are deducted.

So, now her total marks are 36+(-12)=24.

Therefore, Harry scored 24 marks.