Question:
Zoe baked some chocolate cookies and gave half of them to Mabel. Mabel baked some butter cookies and gave half of them to Zoe. Zoe ate 5 butter cookies and the ratio of the number of chocolate cookies to the number of butter cookies she had left became 4 : 1. Mabel ate 3 chocolate cookies and the ratio of the number of chocolate cookies she had left to the number of butter cookies became 3 : 1.
(a) Were there more chocolate cookies or butter cookies at first?
(b) How many chocolate cookies did Zoe bake?
Solution:
![P6 / ACS / 2020 / SA2 Prelims / Paper 1 – Q29 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/05/P6_SA2_2020_ACS_Paper1_Q29-Qns.jpg?resize=400%2C260&ssl=1)
