Question

At a school trivia competition, contestants can answer two kinds of questions: easy questions and hard
questions. Easy questions are worth 3 points, and hard questions are worth 5 points. Chantrea knows
that she correctly answered 21 questions and that she had a total of 79 points. How many hard ques.
tions did she answer correctly?
A. 7
B. 8
C. 12
D. 13
E. 15

Answer 1

Answer:

B.

Step-by-step explanation:

so 8*5 is 40 which leaves 39 points to be accounted for.

39/3 is 13 (easy questions)

8+13=21 which is the amount of questions Chantrea answered correctly so yee

Answer 2

Hard questions Chantrea answer correctly are 8. so option B is correct.

What is the unitary method?

The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.

At a school trivia competition, contestants can answer two kinds of questions: easy questions and hard questions.

So, Easy questions are worth 3 points, and hard questions are worth 5 points.

Chantrea already knows that she correctly answered 21 questions and that she had a total of 79 points.

8*5 is 40 which leaves 39 points to be accounted.

For Easy questions; 39/3 = 13

Total; 8 + 13 = 21

which is the amount of questions Chantrea answered correctly.

Therefore, hard questions she answer correctly are 8. so option B is correct.

Learn more about the unitary method;

https://brainly.com/question/23423168

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