Tks

U welcome

7 watches and 7 bags (7 sets) cost $1547. 1 watch and 1 bag (1 set) = $1547 ÷ 7 = $221 2 watches and 2 bags (2 sets) = $221 x 2 = $442

Or using simultaneous 12 watches n 20 handbags cost $3660 12 watches n 6 handbags cost $1896 14 handbags cost $3660-1896=1664 I handbags cost 1764/14=126

Well, no algebra is needed. Watch the following steps. 3 watches + 5 handbags = $915 4 watches + 2 handbags = $632 SOOOOOO, 7 watches + 7 handbags = $915 + $632 = $1547 7(watch + handbag) = $1547 watch + handbag = $1547 / 7 = $221 2 watches + 2 handbags = 2(watch + handbag) = 2 x $221 = $442 :) No algebra required. Just...observation.

Actually Shaoyang Brandon did it appropriately by grouping them into groups of 7 with 1 watch and 1 bag in one group. Not so much of simultaneous equations here.

This heuristic is called the set method or restating the problem. In fact, if you look at some lower primary questions (which are NO LONGER in syllabus), they use symbolic representation to represent a number. E.g. ♤ + ♡ = 7, ♤ + ♤ = 4...

Shaoyang Brandon ...U are correct because this is how the primary school teacher teach to get the answer for this type of question.

Thank you everyone for the solution as well as the discussion 😄👍🏼

You are using algebra though. You've used the words 'watches' and 'handbags' instead of variables. You've used the algebraic property of distribution and solved equations as well. All these are algebraic properties. They may be disguised but you are using algebra.

So, you mean...algebraic reasoning.

Yes, that is what I mean. You are using algebraic reasoning.

It's still algebra!

Well, the thing is it is easily understood by a primary school kid. He is not using variable x and y or something abstract.

I realize that. But the question needs to be carefully crafted to make the numbers work out easily. It is easily accessible to youngsters, but the aim is to start algebraic thought.

Hi, Elvira Ho. Refer to the image below for the solution to part a and b. For part b, I leave it to you to complete the remaining steps to find the total oranges in the end. You should have an answer between 400 to 500. :)

Area = length x breadth So, Area of rect / breadth = length Perimeter = 2 x ( length + breadth)

(A) Length = 60.5/9 = 6.7222 meter (B) Perimeter = 2 × (9 + 6.722) = 2 × 15.722 = 31.444 meter = 31.4 m.

Maybe there is a typo and the area should be 60.3 m2

Yeah, we were confused bout that too...when we initially tried dividing, there seem to be no end to it...😛😛

Thanks for your help!😀

Thanks for your help!😀

U welcome.