Answer:

There are TWO scoring methods for an exam.

Method I: (+4) marks for each correct answer and (-1) marks for each incorrect answer.

Method II: (+6) marks for each correct answer and (-3) marks for each incorrect answer.

Ravi's SCORE using Method I= Ravi's score using Method II = 45

Which of the following pair of linear equations will give you the No. of correct ANSWERS of Ravi?

[Note: Take number of correct responses as x]

(A) 4x + y = 45,

(C) 4x - y = 45,

6x + 3y = 45

6x – 3y = 45

(B) 4x + 6y = 45, x + 3y = 45

(D) 4x - x = 45; 6y - 3y = 45

Step-by-step explanation:

There are two scoring methods for an exam.

Method I: (+4) marks for each correct answer and (-1) marks for each incorrect answer.

Method II: (+6) marks for each correct answer and (-3) marks for each incorrect answer.

Ravi's score using Method I= Ravi's score using Method II = 45

Which of the following pair of linear equations will give you the No. of correct answers of Ravi?

[Note: Take number of correct responses as x]

(A) 4x + y = 45,

(C) 4x - y = 45,

6x + 3y = 45

6x – 3y = 45

(B) 4x + 6y = 45, x + 3y = 45

(D) 4x - x = 45; 6y - 3y = 45