Q&A - P5 Math

[tianzhu]

Hi


I think MD is a neat way to solve Q1.

I’ll give you some pointers.

The units showing TV sets in warehouse A and B are different. They are not of identical sizes.

We shall use units for WA and parts for WB,

WA
Sold ----- 2 units -----6 units
Left ----- 1 unit ----- 3 units

WB
Sold ----- 2 parts
Left ----- 3 parts

3 parts ------ 120 more than 3 units
Hence, 1 part ------1 unit + 40

WB ------ 5 parts ----- 5 units + 200

14 units + 200 ------ 2440
1 unit ------ 160

WA ------ 1440
WB ------ 1000

Best wishes

[tianzhu]

teddy7171:

Hi tianzhu,


Thank you.

Hi

You're welcome.

Best wishes

[esj152104]

Hi,


Thks for solving the question for me.

[Suz855]

WA

Sold ----- 2 units
Left ----- 1 unit

WB
Sold ----- 2 parts
Left ----- 3 parts

3 parts ------ 120 more than 1 unit
Hence, 1 part ------1 unit + 40

WB ------ 5 parts ----- 5 units + 200

8 units + 200 ------ 2440
1 unit ------ 280

WA ------ 840
WB ------ 1600

Dear Tianzhu
3 parts ------ 120 more than 1 unit
Hence, 1 part ------1 unit + 40 (?)
Shouldn't it be 1p --> 1/3u +40

Working backward
1/3 x 840 =280
3/5x1600 =960

960 - 280 not equal =120

My solution using simultaneous equation
\t3u + 5p =2440
\t3p= 120+1u
\t1u =3p-120

\t9p – 360 +5p =2440\t\t
14p = 2800\t\t
1p=200
5x200 =1000 (warehouse B)\t
2440 -1000 = 1440 (warehouse A)
:oops:

[tianzhu]

Suz855:

Dear Tianzhu
3 parts ------ 120 more than 1 unit
Hence, 1 part ------1 unit + 40 (?)
Shouldn't it be 1p --> 1/3u +40

Hi Suz855

Good Morning.

Thank you for the highlight.

Best wishes

[wahwah]

Hi tianzhu and Suz855,


Thanks a lot for the solution!

[Winx5015]

Hi, need help for this question in CA2.


Q). Danny had $156 more than Esther. After Danny had spent 1/6 of his money and Esther spent 1/2 of her money, Danny had $245 more than Esther. How much money did Danny have at first?

Thanks!

[MathIzzzFun]

Winx5015:

Hi, need help for this question in CA2.


Q). Danny had $156 more than Esther. After Danny had spent 1/6 of his money and Esther spent 1/2 of her money, Danny had $245 more than Esther. How much money did Danny have at first?

Thanks!

Hi

hope this helps...

http://i51.tinypic.com/35b6ur6.jpg\">

cheers.

[small]

Hi all,

Need your help on this number pattern question and many thanks in advance.

http://farm7.static.flickr.com/6155/6180744760_167b4246a3_z.jpg\">

[MathIzzzFun]

small:

Hi all,

Need your help on this number pattern question and many thanks in advance.

http://farm7.static.flickr.com/6155/6180744760_167b4246a3_z.jpg\">

Hi

Is this a P5 question ?? Looks more like a P6 one..

The Nth term = N^2 + (N-1)^2

So, figure 8 = 8x8 + 7x7 = 113

481/2 = 240.5 -- nearest square number is 15^2 and 16^2

15 x 15 + 16 x 16 = 225 + 256 = 481

So, Figure 16 will have 481 buttons.

cheers.