Now let me try to explain for question 5!
In my previous post for question 4, I have explained that it is a question that deals with the concept known as ‘unchanged quantity’. This means that one of the subjects here have their quantity unchanged in the before and after scenarios. What happens is, although the ratios for the before and after changes, we are supposed to change the ratio in the after to match with the one before.
In question 5, we take a similar approach:
We note that in the above question this time, there was a only a change in the number of members in Team X. There were 6 members that took a break. So, following the same idea and method as question 4, we should try to match the before and after ratios, keep the number of units in Team Y same. This can be seen in the diagram in the solution.
Observing the before and after ratios, we can see that there is a decrease of 1unit in the after for Team X. This means that 1unit represents 6 members (this is because 6 members left for a break and then there is a decrease in 1 unit).
The rest are self-explanatory in my solution. Hope this helps!
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