Hi all,
Did you manage to solve the problem? This type of ratio question stumped many students. However, it is actually based on a very simple concept called 'Unchanged Total'.
'Unchanged Total' refers to the total number of units of two ratios will always be the same regardless how you move the components.
Here is the video:
Did you manage to catch the concept? Once your child acquired this concept, he/she will be able to tackle any type of 'Unchanged Total' questions.
Have fun!
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