Question:
Mrs Mok and Mrs Kang were given a certain number of days to sew the same number of cushion covers. Mrs Mok sewed an average of 24 cushion covers a day, and she took 5 days more. Mrs Kang sewed an average of 30 cushion covers a day, and she finished sewing her cushions 4 days earlier. How many days were they given to finish sewing the cushions?
Solution:
![P6 / Catholic High / 2020 / SA2 Prelims / Paper 1 – Q19 [1 mark]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/06/P6_SA2_2020_Catholic_High_Paper1_Q19-Qns.jpg?resize=400%2C260&ssl=1)
![P6 / ACS / 2019 / CA1 – Q21 [4 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/01/P6_ACS_2019_CA1_Q21-Qns.jpg?resize=400%2C260&ssl=1)
Why 216 divided by 6??
Hi!
6 -> 1 day
216 -> 216/6 = 36 days
Hope this clarifies!
Also is there a specific method for this type of qns?
Hi, I don’t have a specific method that would work across this type of question.
But generally students should take note what is the same between the people, and what is not.
For example in this question, the total number of cushions is the same between both Mrs Kang and Mrs Mok.
The total number of days taken is different.