In an examination there
are 30 questions. 1 mark is given for each correct answer and 0.25 is deducted
for every incorrect answer. Ankur attempted all the questions and scored
13.75.How many incorrect answers did he have?

Solution:

(1) 10 (2) 11
(3) 12 (4) 15 (5) None of these

For Answer Click on "Read more" below:

Observe that it is asked
about number of

**incorrect**answers.
Let the number of
incorrect answers be ‘x’ => number of correct answers = 30-x

“1 mark is given for each
correct answer and 0.25 is deducted for every incorrect answer”

=> total marks scored
by Ankur =

(30-x)*1 - x*(0.25) =
13.75

Multiplying with 4 on both
sides:

=> 120-4x-x =55 =>
5x = 65 => x = 13

**Answer (5)**
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