Question

In a test (+5) marks are given for every correct answer and (-2) marks are given for every incorrect answer.
Charlie answered all the questions and scored 40 marks though she got 10 correct answers .How many incorrect answers had he attempted

Answer 1

Answer:

5 incorrect answers

Step-by-step explanation:

charli answers 10 correct so he gets 50 points

now the school is 40 points so 50 - 40 is equals to 10

so he has lost 10 points means -10

so - 10 divide by -2 = 5

therefore charli scores 10 correct and 5 in correct incorrect answer

hope it is helpful

Answer 2

ANSWER = 5

Total marks scored = 40

correct answers = 10

mark per correct = 5

total marks for

correct = 10 × 5 = 50 marks

marks for incorrect answer = 50 - 40

= 10 marks

mark deducted per incorrect = 2

no. of incorrect = 10 ÷ 2 = 5

Total incorrect answers = 5