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 / Red Swastika / 2020 / SA2 Prelims / Paper 2 – Q13 [4 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2020/11/P6_Red_Swastika_2020_SA2_Paper2_Q13-Qns.jpg?resize=400%2C260&ssl=1)
![P6 / Nan Hua / 2021 / SA2 /
Paper 1 – Q14 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2022/08/P6_SA2_2021_Nan_Hua_Paper1_Q14-Qns.jpg?resize=400%2C260&ssl=1)