Question

In a test, there are 100 questions. +3 marks are given for each correct answer, -1 mark for each
incorrect answer and 0 marks are given for not attempting the question. Rakesh scores 190 marks in a
test by answering 70 questions correctly. Find the maximum marks in the test and also find the number
of incorrect answers given by Rakesh.​

Answer 1

Answer:

maximum marks = 70 × 3 = 210

incorrect answers = 210 - 190 = -20 marks

                              = 20

Answer 2

First of all no. of questions Rakesh did not get marks for and incorrect answers = 100-70= 30

Now questions Rakesh attempted = 70

So marks if all are correct = 70×3 =210

Now marks Rakesh got = 190

Therefore marks deducted = 210-190=20

Now marks deducted for 1 wrong answer = 3+1=4

Therefore when 20 marks deducted no. of incorrect answers = 20÷4=5

Now total marks of the test = 100×3 =300

Therefore,

Ans= Rakesh did 5 questions incorrectly and the total marks of the test was 300

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