Sarin’s family in Kluang part 19 (Math Question)

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The blog postings are about the Singapore Math. The readers can learn from the postings about Solving Singapore Primary School Mathematics. The blog presents the Math Concept, the Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can learn the skills of dealing with the Math Modeling, the Problem Sum from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is an upper primary school math question on Ratio and Problem solving.

Read the posting on Sarin’s family in Kluang about Sarin’s family venture in Kluang.

You can read the posting on Sarin learns concept of ratio in school to understand the concept of Ratio.

Challenge yourself with the question before look out for the given solution‼!

Upper primary school mathematics question UPQ502

Sarin and Fatimah went shopping together in Kluang Mall. They had a total sum of $144 for shopping. The ratio of the amount Sarin spent to the amount Fatimah spent is 4 : 3. The amount that Fatimah had left was $9 more than what she had spent. She had thrice as much money left as Sarin.

(a) How much money did Fatimah spend?

(b) How much money did Sarin have at first?

Solution:

Draw the model for total sum

UPQ502-1

Per the model

11 units = 144 – 12 = 132

1 unit = 12

The amount of money Fatimah spent = 3 × 12 = $36

The amount of money Sarin had at first = 5 × 12 + 3 = $63

 More Questions on Ratio. Click here…..

More Questions on Problem Solving. Click here…..

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