Question

in a test (+6) marks are given for every Correct answers and (-3) for every incorrect answer and 0 are answer for not attempted. ramesh got 5 correct and 8 incorrect out of 15 questions. what is his total score

this is brother question I can't understand please help me​

Answer 1

Answer:

Complete step by step answer:

Here, we are given positive marks for every correct answer and negative marks for every incorrect answer i.e. for the correct answer =+3 and for every incorrect answer =−2 mark.

(i)

Radhika got total marks =20, the correct answer =12

So, the total marks for correct answer = marks for correct answer × number of correct answers.

⇒ Total marks for correct answer =3×12 marks

Multiply the terms,

⇒ Total marks for correct answer =36 marks

Thus, Radhika got a total of 36 marks for 12 correct answers.

Now, subtracting the total marks of the correct answer from the total marks we will get marks for incorrect answers. So, writing as

⇒ Total marks for incorrect answer =20−36 marks

Subtract the values,

⇒ Total marks for incorrect answer =−16 marks

So, she got 16 marks for the incorrect answer. Now, we know that for every incorrect answer =−2 marks.

So, the total marks for incorrect answers = marks for incorrect answer × number of incorrect answers.

Substituting values, we get

⇒−16=−2× number of incorrect answers

So, dividing by −2 on both sides, we get

⇒ Number of incorrect answers =8

Hence, the number of incorrect answers is 8.

(ii)

Mohini got total marks =−5, the correct answer =7

So, the total marks for correct answer = marks for correct answer × number of correct answers.

⇒ Total marks for correct answer =3×7 marks

Multiply the terms,

⇒ Total marks for correct answer =21 marks

Thus, Radhika got a total of 21 marks for 7 correct answers.

Now, subtracting the total marks of the correct answer from the total marks we will get marks for incorrect answer. So, writing as

⇒ Total marks for incorrect answer =−5−21 marks

Subtract the values,

⇒ Total marks for incorrect answer =−26 marks

So, she got 26 marks for the incorrect answer. Now, we know that for every incorrect answer =−2 marks.

So, the total marks for incorrect answers = marks for incorrect answer × number of incorrect answers.

Substituting values, we get

⇒−26=−2× number of incorrect answers

So, dividing by −2 on both sides, we get

⇒ Number of incorrect answers =13

Hence, the number of incorrect answers is 13.

Step-by-step explanation:

this is the stepbut it is not the answerkindly change the number where the starting point thank you

Answer 2

Answer:

hey here is your answer !!

Step-by-step explanation:

I am just kidding don't take it seriously !!

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