The blog postings are about the Singapore Math. The readers can learn from the postings about Solving Singapore Primary School Mathematics. The blog presenting the Math Concept, the Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids will able to acquire knowledge of dealing 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.

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

Read also the posting on __Sarin learns the concept of Ratio in School (mathematics concept)__ to understand the concept of Ratio.

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

**Upper primary school mathematics question UPQ563**

Sarin, Hairu and Fatimah took their parents out for a dinner. If Sarin paid for the dinner, the amount of money that Sarin, Hairu and Fatimah left will be in the ratio 3 : 8 : 9 respectively. If Fatimah paid for the dinner, the amount of money Sarin, Hairu and Fatimah left would be in the ratio 5 : 4 : 1 respectively. If Hairu paid for the dinner, the amount of money Sarin, Hairu and Fatimah left would be in the ratio 10 : 1 : 9 respectively. Sarin had $40 more than Hairu. How much did the dinner cost?

…You can click here to read the solution…

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