The blog postings are about the Singapore Math. The readers can learn from the postings on Solving Singapore Primary School Mathematics that teaches in Singapore Primary Schools. You or your kids can learn the skills of dealing with Math Modeling, Math Problem Solving, 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 Percentage and Problem Sum.

You can click here and read the posting on **A family in Singapore** about Sarin’s family.

You should read the posting on **Sarin learns Average Number, Percentage and Charting in school (Math Concept) **to understand the concept of Percentage.

Read also the posting on **Sarin learns concept of ratio in school **to understand the concept of Ratio.

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

**Upper primary school mathematics question UPQ272**

Sarin’s mother gave some money to Sarin, Hairu and Fatimah in the ratio of 2 : 3 : 4 respectively. What percentage of Fatimah’s money must she give away to her brothers so that all the 3 kids have an equal amount of money?

Solution:

Based on the ratio of money given to the three kids 2 : 3 : 4 draw the ratio model.

Per the model,

For all three kids to have the same amount of money, Fatimah needed to give 1 unit of money to Sarin.

The percentage of money Fatimah need to give to Sarin = ¼ × 100% = 25%

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