Hi Winson, is there a simpler way. This is a P3 question but they have not learn algebra. Any method to simplify it?

Well technically i am not using algerbra cuz in algerbra i would be using x but instead i am using 1u?

o wait i think i need to change my method

If only i could model >_<

Hope this make sense. Done by my 11 year old daughter.

Thx Adrian. This is a gd model!!

Draw one box. Call it C. Draw another box C plus another box of 45 for B. B = C + 45 Draw another box C plus box of 45 plus box of 173 for D. D = B + 173 = C + 45 + 173 = 218 The three row of boxes add together. B + C + D = 710 C + 45 + C + C + 218 = 710 3 C + 263 = 710 3 C = 710-263 = 447 C = 447/3 = 149

prob wrong answer or diagram too dark to tell how many tiles exactly. if ur assumption of 4 tiles for fig 1, 8 for fig 2 etc is correct, then ur answer shd be correct. :)

40 is correct. The pattern is to multiply the figure number by 4 to get the total tiles for that figure. No worries.

Thanks Vera Koh and Shaoyang Brandon.

Jerlynn Teo, thanks for the model. But how did u know the number of units shd be in multiple of 3s. I joe=6 units and Peter =3. Qn only mentions J=2P 1st part of the qn. 2nd part it says after giving 180 then P has 3x of Joe.😟

The number of marbles Peter has remained unchanged so the size of Peter's model also remained unchanged.

Shift all the blocks to one corner

Like what Zhong Shu Hao has said, what i did here is that I shifted all the cubes to the top left hand corner. And this is what you will get when you look from above. Number of painted faces = 16

Side views. Number of faces = 4 x (4+3+2+1) = 40

Bottom view. Number of faces = 16

Hence, total number of painted faces = 16 + 40 + 16 = 72 faces

This is awesome. Thank you so much. 😊✌🏻️

Thanks much. 😊

Thank you so much. Really awesome. Very clear. 😊✌🏻️

Really appreciate your clear drawings. 😊

There are 2 more squares in this figure. They're above the triangle u labelled 5 on the right side.

You have 2 nos of 6 which shld be 6 and 7. Yes, there are 2 more squares above the "5" that u had indicated on the right.

Yes both parents have pointed out. Please see pic to be clearer. 😊✌🏻️

Drawing not clear enough & overlooked too, thxs all for pointing the mistake

9

😨 I stuck