Question:
The participants of a competition are divided equally into 2 groups, Group A and Group B. In Group A, there are 30 more boys than girls. In Group B, there are 18 more girls than boys. 3/7 of all the participants are girls. How many participants are boys?
Solution:
![P6 / Singapore Chinese Girls / 2019 / SA2 / Paper 2 – Q11 [4 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2020/07/P6_SCGS_2019_Prelims_Paper2_Q11-Qns.jpg?resize=400%2C260&ssl=1)
![P6 / Ai Tong / 2020 / SA2 Prelims / Paper 1 – Q22 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/08/P6_SA2_2020_Ai_Tong_Paper1_Q22-Qns.jpg?resize=400%2C260&ssl=1)