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 skill 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 Percentage and Volume.

You can read posting **Sarin learns Perimeter, Area and Volume in school(Math Concept) **to learn the concept of perimeter and area.

Read also the posting on **Sarin learns Shapes and Solids in school (Math Concept)** to know about shapes.

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

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

**Upper primary school mathematics question UPQ404**

A rectangular tank, 8 m long and 5 m wide, was 25% filled with water. When Sarin poured another 96 m^{3} of water into the tank, the tank became 45% filled with water. Find the height of the tank in metres.

Solution:

Sarin poured in another 96m^{3} of water

The height of water in the Tank increased by = 96 ÷ 8 ÷ 5 = 2.4m

The volume of water in the tank increase from 25% to 45%

Since the tank is rectangle and base area at any height is constant (same in base area)

The increase in water = 45% – 25% = 20% and is 2.4m

20% ==> 2.4m

10% ==> 1.2m

100% ==> 12m

The height of the tank is 12m

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