Question:
For a scrapbook-making course, each participant was given some buttons. Each adult received 10 buttons. Each girl received 5 buttons and each boy recevied 4 buttons. The ratio of the number of girls to the number of boys was 7 : 4. Half of the total number of participants was adults. The participants received a total of 3381 buttons. How many participants were there at the course?
Solution:
![P6 / Raffles Girls / 2019 / SA2 / Paper 2 – Q12 [4 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2020/07/P6_Raffles_2019_Prelims_Paper2_Q12-Qns.jpg?resize=400%2C260&ssl=1)
![P6 / Red Swastika / 2021 / SA2 / Paper 2 [5 marks] – Q16 Reader Submission #50](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2022/01/ReaderSub_50-Qns.jpg?resize=400%2C260&ssl=1)