Pls help me to understand the answer sheet's solution! Or if have any alternativ

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primary 6 | Maths
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primary 6 Maths Singapore

Pls help me to understand the answer sheet's solution! Or if have any alternative method of solving this question, will also appreciate it! Thanks!

Date Posted: 3 years ago

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I used algebra in this question. Let me know if you still unsure.

Date Posted: 3 years ago

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Here's a more elaborated version of it.

Date Posted: 3 years ago

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The concept of average is about equal distribution.
If that's the case, you would realise that Faith's number of candies is 4 less than the average. As such, the other 2 friends have to give a total of 4 candies to him so that he can get the average. So what remain for the 2 friends would be (10+30)-4=36. Then, they can share the 36 to get the average 18.
So Faith actually has 18 - 4 =14.
Hopefully, this helps you to understand those steps. Because I am concern whether the algebra method is accepted in primary level.

A simple situation. If you have 20 candies and your friends has 24 candies, he just have to give you 2 candies so that you and him can both get the average 22.

Sorry it's a little lengthy.

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