In a Math test (+2) marks are given for every correct answer and -1 mark is given for every incorrect answer. Zayn gets 12 of her answers correct out of 18 questions on the test. What will be her score?
Answers
Answer:
her score is 30
Explanation:
18-12
= 6
she have correct answer 12 and 6 incorrect answer
12x2 = 24
-1x6 = -6
24-(-6) = 30
she has score is 30
Answer:
Total score of Zayn = 18
Explanation:
Given,
score for every coreect answer = +2
score for every incorrect answer = -1
total number of questions = 18
total number of questions answered correctly = 12
total number of questions answered incorrect = 18 -12 = 6
to find : total score of Zayn
Score for correct answers = 12 × 2 = 24
score for incorrect answers = 6 × (-1) = -6
total score = 24 + (-6) = 24-6 = 18
Zayn got 18 marks in the test.
This question is based on the concept of integers.
What are integers?
Integers are those numbers which involve negative numbers, postive numbers and zero. These are the numbers which does not include fractions or decimals. Symbol of integers is Z. These can be represented on a number line. On the number line, mid point is marked as zero and to the right of it are marked positive numbers and to the left of it are negative numbers.