E-Math - Ratio Rate and Proportion - Challenging Question

E-Math - Ratio Rate and Proportion - Challenging Question

Topic: Ratio Rate and Proportion

The trick is to this rate and proportion question is to find the 

fraction of the tank that is filled in one minute. Some students

will attempt to use the direct proportion formula y=kx to solve,

which is not a good idea.

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About Unknown

I created this Blog after my students told me that there is very little information about how to solve GCE O Level Math and Additional Math (A-Math) questions on the internet. Even if they manage to find, the solution were for very basic questions. I am a Full-time Math Tutor in Singapore. I tutor mainly in Northern Singapore (Woodlands, Chua Chu Kang, Bukit Panjang, Yishun and Sembawang). I also tutor in Johor Bahru.