Question:
Mdm Nurul had some red and green apples in her minimart. The ratio of the number of red apples to the number of green apples was 13 : 7. After selling 60% of the red apples and 55 green apples, the ratio of the number of red apples to the number of green apples was 13 : 12.
(a) How many apples were there altogether at first?
(b) After that, she bought more red apples. The number of red apples she bought was 3.10 of the number of red apples left before that. How many red apples did she have in the end?
Solution:
![P6 / Catholic High / 2019 / SA1 / Paper 2 – Q12 [4 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2020/03/P6_Catholic_2019_SA1_Paper2_Q12-Qns.jpg?resize=400%2C260&ssl=1)
![P6 / Maris Stella / 2020 / SA2 Prelims / Paper 1 – Q30 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/12/P6_SA2_2020_Maris_Stella_Paper1_Q30-Qns.jpg?resize=400%2C260&ssl=1)
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