math

posted by .

in an examination there are 180 questions , 4 marks is given for each correct answers and 1 marks is subtracted for each wrong answers . if a boy scores 220 marks find the no of correct and wrong answers ???

  • math -

    If there are c correct and w wrong answers,

    c+w=180
    4c-w = 220

    c=80
    w=100

    check: 4*80-100=220

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. algebra

    here is the question: I am confused about the steps I need to follow to be able to complete this question some explanation will be appreciated :) In a Multiple - choice examination of 25 questions, four marks are given for each correct …
  2. math

    A test had 200 questions .Each correct answer carried 2 marks.Each wrong answer carried -1/2 marks and unanswered question fetched no marks .Ajay attempted all the question in the test and he scored 360 marks.What would his marks be, …
  3. Math

    There are 20 question in a quiz. 5 marks will be given for a correct answer. 1 mark will be deducted for a blank answer and 3 marks will be deducted for a wrong answer. (a) Peter gives 2 blank answers and he gets 72 marks. Find the …
  4. math

    a mathematics question contained 20 items. every wrong answer scores -2marks, every correct answer scores 4marks and no mark for no answer. (a) find the minimum possible score (b) Tembo had 10 correct answers, 8 wrong answers and 2 …
  5. MATH

    A quiz consists of 90 multiple-choice questions, each with 4 possible answers (A, B, C and D). For someone who makes random guess , A is the correct answer for all the questions. If each right answer carries 4 marks and each wrong …
  6. MATH

    A quiz consists of 90 multiple-choice questions, each with 4 possible answers (A, B, C and D). For someone who makes random guess , A is the correct answer for all the questions. If each right answer carries 4 marks and each wrong …
  7. Math

    In an examination of 100 marks a person attempted 77 questions and got 42 correct answer and 35 wrong answer. If each correct answer carried 2 marks and wrong answer carried 0.50 marks. How much total marks the person scored?
  8. Math

    there are 10 questions in a quiz competition 5 marks will be given for each Correct answer 3 marks will deducted for each wrong answer or no response m be the number answers and s be the obtained .write down the formula for calculating …
  9. Math

    A test has 12 problems, and each problem is worth 5 marks. Full marks are given for a correct answer, 2 marks are given if there is no answer, and no marks are given for an incorrect answer. Some scores between 1 and 60, are impossible …
  10. Math

    In an exam there were 90 queations each carried 4 marks.For correct 4 marks shall be awarded and for every wrong response 1 marks shall be deducted from the total score .If I attempted the exam and made wrong 14 questions and unattempted …

More Similar Questions