Question:
Yumi had 90 more stickers than Martin at first. Yumi gave away 90% of her stickers to her sister and Martin gave away 60% of his stickers to his brother. In the end, Martin had twice as many stickers as Yumi. How many stickers did Yumi have at first?
Solution:
![P6 / Tao Nan / 2019 / SA1 / Paper 2 – Q02 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2020/05/P6_Tao_Nan_2019_SA1_Paper2_Q02-Qns.jpg?resize=400%2C182&ssl=1)
![P6 / Red Swastika / 2020 / SA2 Prelims / Paper 2 – Q16 [5 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2020/11/P6_Red_Swastika_2020_SA2_Paper2_Q16-Qns.jpg?resize=400%2C260&ssl=1)