Question

In a test consisting of 25 questions, each student gets +3 marks for every correct answer and −1 mark for every incorrect answer. Each question must be answered. Which of the following are the possible number of questions answered correctly and incorrectly to obtain 55 marks?

Answer 1

Answer:

plz thank my answers also make my answers as brainlist

Answer 2

Answer:

∵ 1 correct answer of 3 marks then

Marks cut for the incorrect answer =20−10×3=20−30=−10

From question, −1 mark is given for every incorrect answer.

Hence, total incorrect answers =

−1

−10

=10