Find 1 "?".

Okay. I got it. Thank you. Btw I find the question quite tricky...

David...there are two parts to it. One to find out how much potatoes are need to make the pies so you need to subtract. Then, the second part is to find out out how much potatoes is used to make each pie. When explaining you probably want to highlight left after making 5 pies and explain what this means. Hope this helps.

For younger children, word problems may be difficult. So it's good to draw models to represent the situation and help with understanding the problem better, especially the relationship between the quantities (710g, 215g, 5 pies). Then it'll also be easier to decide what operations to use to solve. Visualisation is a good process that children should be exposed to.

Initially, we may find it hard to draw the models or we might draw them 'incorrectly' but as with anything else, practising helps us improve. ☺️

This problem is a multi-step one, so all the more children need effective problem solving tools to help them with the process.

Thank u everyone.

Just trying, not very sure also.

Yes thanks tan wen dee! Ans is 2-y.

On the other hand besides using algebra can we solve otherwise? Experts pls advise..

Thanks Vera!

Ratio is the simplest form n should add a common factor for actual age, I think.

Thanks kim soon!

What is the level?

sec 2

I use the simple substitution method

thks all for helping

Average of A and B ＝ 65 Hence, Sum of A and B ＝ 65×2 ＝ 130. Doing the same, Sum of B and R ＝ 69×2 ＝ 138 Sum of A and R ＝76×2 ＝ 152. Adding these three equations together, Sum of A and B, B and R, A and R ＝ 130+138+152 ＝420 Sum of 2A,2B,2R＝420 Sum of A,B,R＝ 210 Score of R ＝ 210 - 130 ＝ 80.

Thanks

Ji Lian so enthu. Found A and B as well 😂

Didn't finish reading the qn. Used to working everything out. Haha