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 acquire the skills to deal with the Math Modeling, the Math Problem Solving and 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 and ****The Great Singapore Sale** in the **Welcome** category for the story.

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 UPQ446**

Sarin, Hairu and Fatimah had spent an amount of money during the Great Singapore Sale. Sarin and Hairu spent $46 altogether. Sarin and Fatimah spent $54 altogether. Fatimah and Hairu spent $68 altogether. What was the ratio of Hairu’s spending to the total sum of money they spend?

Solution:

Work out the model base on their combination of spending

Hairu’s money = 60 ÷ 2 = $30

Sarin’s money = 46 – 30 = $16

Fatimah’s money = 68 – 30 = $38

Total spending = 30 + 16 + 38 = $84

The Ratio, Hairu’s spending to total spending = 30 : 84 = 5 : 14

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