Question

Mahesh took a test which have 20 questions the total grade was computed by awarding 10 points for each correct answer and deducting 5 points for every wrong answer he had answer all 20 questions and obtained a score of 125 points how many wrong answers did he have​

Answer 1

Answer:

He had 15 wrong answers

Step-by-step explanation:

He has 20 questions, which leads us to the total marks of the questions asked in test, provided, 10 marks for each right answer, total marks = 20 * 10 = 200

Marks he scored = 125

Marks he lost = 75

Marks deducted for 1 wrong answer = 5

Number of wrong answers if 5 marks are deducted = 1

Number of wrong answer if 1 mark is deducted = 1/5

Number of wrong answers if 75 marks are deducted = 75 * 1/5 = 15

He had 15 wrong answers

Answer 2

Answer:

5

Step-by-step explanation:

wrong answer is a

right answer 20-a

10*(20-a)-5a=125

a=5

so wrong questions are 5

right answer is 15

15*10-5*5=125