multiplcation and division of integers

[early]

To discourage a random guessing on a multiple-choice exam, a professor assigns 7 points for a correct answer, -3 points for an incorrect answer; and -1 point for leaving the question blank. what is the score for a student who had 17 correct answer, and 8 incorrect answers and left 2 questions blank?

 

[Deleted member 4993]

To discourage a random guessing on a multiple-choice exam, a professor assigns 7 points for a correct answer, -3 points for an incorrect answer; and -1 point for leaving the question blank. what is the score for a student who had 17 correct answer, and 8 incorrect answers and left 2 questions blank?

I'll do a different problem:

To discourage a random guessing on a multiple-choice exam, a professor assigns 4 points for a correct answer, -1 points for an incorrect answer; and 0 point for leaving the question blank. what is the score for a student who had 87 correct answer, and 5 incorrect answers and left 8 questions blank.

Points for 87 correct answer = 87 * 4 = 348

Points for 5 incorrect answer = 5 * (-1) = -5

Points for 8 blank answer = 8 * 0 = 0

Total points = 348 - 5 + 0 = 343

Follow the exact same procedure.....

 

[mikexz]

Basically you want to group all the positives (correct answers) together and use multiplication to get the product then repeat with the negatives/wrong answers and add them up.

 

[Deleted member 4993]

Basically you want to group all the positives (correct answers) together and use multiplication to get the product then repeat with the negatives/wrong answers and add them up.

In the original problem there is penalty for "not answering"(neither correct nor wrong).