# Sarin and his coin bank part 36 (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 presenting the Math Concept, Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can learn the skills of dealing with Math Modeling, 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 Problem Solving.

You can read the posting on Sarin and his coin bank for the story of coin bank.

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

Upper primary school mathematics question UPQ348

Sarin, Hairu and Fatimah saved \$49. Hairu saved twice as much money as Sarin. Fatimah saved twice as much money as Hairu. How much money did Sarin save?

Solution:

Take the money that Sarin had as 1 unit

Hairu saved twiced as much as Sarin

The money that Hairu saved = 1 × 2 = 2 units

Fatimah saved twice as much as Hairu

The money that Fatimah saved = 2 × 2 = 4 units

The math model

The total number of units = 7 units

They saved \$49 in total

7 units = 49

1 unit = \$7

The money that Sarin saved = \$7