Question 20
Huang took a test and answered all the questions. The test consists of questions from three subjects: Algebra, Geometry and Combinatorics. It turned out that he correctly answered:
- 67.5% of the Algebra questions,
- 86% of the Geometry questions,
- 80% of the Combinatorics questions,
- 70% of the questions on the subjects of Algebra and Combinatorics and
- 85% of the questions on the subjects of Geometry and Combinatorics.
What is the percentage of correct answers from all the questions?
- 67.5% of the Algebra questions,
- 86% of the Geometry questions,
- 80% of the Combinatorics questions,
- 70% of the questions on the subjects of Algebra and Combinatorics and
- 85% of the questions on the subjects of Geometry and Combinatorics.
What is the percentage of correct answers from all the questions?