Question:
Kenneth took part in a quiz in which he had to answer 70 questions. In the quiz, 5 marks were awarded for each correct answer and 2 marks were deducted for each wrong answer. Kenneth scored a total of 182 marks for the quiz.
(a) What is the difference between his greatest possible score and his actual score?
(b) How many questions did he answer wrongly?
Solution:
![P6 / Maris Stella / 2020 / SA2 Prelims / Paper 1 – Q04 [1 mark]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/12/P6_SA2_2020_Maris_Stella_Paper1_Q04-Qns.jpg?resize=400%2C260&ssl=1)
![P6 / Nan Hua / 2019 / SA2 / Paper 2 – Q09 [3 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2020/07/P6_Nan_Hua_2019_Prelims_Paper2_Q09-Qns.jpg?resize=400%2C260&ssl=1)