Question:
In 2018, there were 864 children in a dance club. In 2019, some boys and girls joined the club. As a result, there was a 20% increase in the number of boys and 25% increase in the number of girls. Then the ratio of the number of boys to the number of girls in 2019 was 6 : 5. How many girls were there in the club in 2019?
Solution:
![P6 / Temasek / 2020 / SA2 Prelims / Paper 2 – Q07 [3 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2020/09/P6_Temasek_2020_SA2_Paper2_Q07-Qns.jpg?resize=400%2C260&ssl=1)
![P6 / Nanyang / 2020 / SA2 Prelims / Paper 2 – Q02 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2020/11/P6_Nanyang_2020_SA2_Paper2_Q02-Qns.jpg?resize=400%2C232&ssl=1)