Question

In a test, one mark is awarded for each correct answer and 0.5 mark is deducted for each incorrect answer. A student attempted all the questions in it. If the mark(s) awarded for each correct answer and the marks deducted for each incorrect answer are interchanged, he would have got 90 marks less than what he actually got. Find the number of questions in the test.

(a) 105 (b) 125 (c) 225 (d) 250​

Answer 1

Answer:

hey, mate here is your answer.

125. simple.

Please mark my answer the brainliest.

Answer 2

Answer:

Step-by-step explanation:

Let x be the number of correct answer and y be the

incorrect answers.

Marks obtained = (x ∗ 1) – (y ∗ 0.5)

= x – 0.5y

On interchanging

Mark obtained = 0.5x – y

(x – 0.5y) – (0.5x – y) = 90

0.5x +0.5y = 90

x + y =

90

0.5

= 125