Secondary 2 Mathematics-Simultaneous Linear Equation in 2 Unknowns Real Life Situation
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A multiple choice competition awards 2 points for correct answers and deducts 1 point for incorrect answers. Across 40 total questions, the participant scored a total of 50 points. Using simultaneous linear equations of the form C + W = 40 and 2C - W = 50, where C is the number of correct answers and W is the number of incorrect answers, the equations can be solved to determine that the participant answered 30 questions correctly and 10 incorrectly.
Secondary 2 Mathematics-Simultaneous Linear Equation in 2 Unknowns Real Life Situation
- 1. Real Life Situation If you are participating in a Multiple Choice Question competition, they would usually have some questions for you to answer. If you get it correct, you get some points; if you got it wrong, you would lose some points. They will also not show you how many question you got correct. In a competition, there are 40 questions. If you got it correct, you will get 2 points; if you got it wrong, you will lose 1 point. Now, if you are curious about how well you done in the competition, you can use simultaneous linear equation to find out. So, if you got a total point of 50 points,how many questions did you get correct? First, to solve this, we must form the 2 equation. Take C as correct and W as wrong. There are 40 questions altogether, so, C+W=40 You will gain 2 point if you got it correct and lose 1 point if you got it wrong, you got 50 points altogether, so 2C-W=50 Now, we got our 2 equations, so, to find how many questions you get correct and how many questions you got wrong, we have to solve it (2C-W)+(C+W)=3C=90 C=90/3=30 W=40-30=10 So, you got 30 questions correct and 10 questions wrong