I'm not good at math... can someone help?

You just do 604/800=0.755

The multiply that by 100, which gives you 75.5%

well you would get 4 for a correct answer and 1 for an incorrect answer.

So assume you got 1 for every question(200 points) and an additional 3 for the correct ones. So all you do is:

604 - 200 = 404

404 / 3 = 137.6 (correct answers)

137.6/200 *100= 67%

The total points for all correct answers would be 600 (800-200). Your total correct points were 404 (again subtracting the 'given' 200). Divide 404 into 600 to get your percentage score (67.3%).

That is 4 points for each correctly answered question and 1 point for each incorrectly answered question.

let x be the number of correct answers and y the number of incorrect answers.

4x+1y=604 -- (1)

x+y=200 -- (2)

plug this into (1)

4x+(200-x)=604

3x=404

x=134.66=134 (correct)

y=66 (wrong)

percentage correct=(134/200) x 100=67%

4x=404

x=101 (correct answers)

y=99 (wrong answers)

x=13

Well, if we just subtract 200 from all the values, then you got 404 from 0 to 600. Then divide 404 by 600 and you get 0.67333 (the 3s repeat), or 67.333%.

That said, the scoring system you're being marked under may not work precisely that way. Without knowing how it works I can't guarantee that my answer is correct.

1) 200 correct questions -----> 800 points

1 correct answer ------------> x

x = 4 points each correct question

2) 4 points -----------> 1 correct answer

604 points --------> y correct answers

y = 151 correct answers

3) 200 correct answers ------> 100%

151 correct answers ------> z

z = 75,5 % of correct answers

There are more fast and direct ways to get the answer.

If you consider 1 point even for wrong answers, the calculation is more difficult and longer.

Hope to have helped.

If

75.5% When ever you want to figure out your percentage on a test or anything, you can use a calculator take your points that you got then divide that number by the points possible and that will give you your answer.

Example 604 / 800= 75.5%

u have secured 78% if u want solution contact me