Question

There are 180 multiple choice questions in a test. Candidate gets 4 marks for each correct answer,I am for every unattempted wrongly answer questions one marks is detected from the total score of the correct answers. If a candidate scored 450 marks in the test how many questions did he answer correctly

Answer 1

Answer:

Let the number of correctly attempted questions be x

so, the number of unattempeted or wrong question = 180-x

total marks for correct attemptions = 4x

and total marks for unattempeted or wrong question = -1 (180-x)

= x - 180

as total marks = sum of attempted and unattempeted or wrong question = 180-x

450 = 4x + x - 180

450 = 5x -180

630 = 5x

126 = x

so, the number of correctly attempted question was 126.

Step-by-step explanation:

mark it as a brainliest answer