Question:
A bakery baked buns and cakes in the morning in the ratio 4 : 1.
After selling 50 buns and 10 cakes in the afternoon, the ratio of the number of buns to the number of cakes left became 3 : 1.
a) Find the number of buns that the bakery baked in the morning.
b) Find the number of cakes left.
Solution:
![P6 / Henry Park / 2019 / SA1 / Paper 2 – Q09 [3 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2020/04/P6_HenryPark_2019_SA1_Paper2_Q09-Qns.jpg?resize=400%2C260&ssl=1)
![P6 / Nan Hua / 2019 / SA2 / Paper 2 – Q08 [03 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2020/07/P6_Nan_Hua_2019_Prelims_Paper2_Q08-Qns.jpg?resize=400%2C260&ssl=1)
5.
Box A contained red and blue marbles. The ratio of the number of red marbles to the number of blue marbles was 2/3
Box B contained green and yellow marbles. The ratio of the number of green marbles to the number of yellow marbles was 1/4 .
The ratio of the total number of marbles in Box A to the total number of marbles in Box B was 1/3
(a) Express the ratio of the number of red marbles to the number of yellow marbles.
(b) After 1200 red marbles were added to BoA the total number of marbles in Boxes A and B became the same. Find the total number of marbles in the two boxes in the end.