Q&A - P3 Math

[tianzhu]

kiasustar:

Cindy had twice as much as Ivy. After Cindy spent $36 & Ivy spent $12, Ivy had twice as much as much the money as Cindy. How much had Cindy left ?


Anyone can help? Thank u v much

Hi

Hope this helps.

Best wishes

http://farm9.staticflickr.com/8147/7354279182_524fd0777e_z.jpg\">

[tianzhu]

kiasustar:

Ms Wang had $400 more than Mr Sim.at first. After Mr Sim had spent $340, Ms Wang had 5 times as much as Mr Sim. How much did Ms Wang have at first?


Anyone? Tq

Hi

Hope this helps.

Best wishes

http://farm8.staticflickr.com/7233/7169137647_ae7d43268c_z.jpg\">

[kiasustar]

:thankyou: :udawoman: :udaman: :rahrah:

[HAPPYH]

kiasustar:

Cindy had twice as much as Ivy. After Cindy spent $36 & Ivy spent $12, Ivy had twice as much as much the money as Cindy. How much had Cindy left ?


Anyone can help? Thank u v much

Is the ans 12?

[HAPPYH]

HAPPYH:

kiasustar:

Cindy had twice as much as Ivy. After Cindy spent $36 & Ivy spent $12, Ivy had twice as much as much the money as Cindy. How much had Cindy left ?


Anyone can help? Thank u v much

Is the ans 12?

No i think I am wrong

[kiasustar]

As above, shld be $4

[peapot]

Hi Anyone can help?


The total mass of John and Daniel is 150kg. The total mass of Ramesh and Daniel is 142kg.
(a) how much heavier is John than Ramesh?
(b) if the total mass of the 3 boys is 224kg, how heavy is Daniel?

What I don’t understand is why 150-142=8 is the answer to show how much heavier is John than Ramesh??

[Thein]

[quote]Hi Anyone can help?


The total mass of John and Daniel is 150kg. The total mass of Ramesh and Daniel is 142kg.
(a) how much heavier is John than Ramesh?
(b) if the total mass of the 3 boys is 224kg, how heavy is Daniel?

What I don't understand is why 150-142=8 is the answer to show how much heavier is John than Ramesh??[/quote]J+D = 150 ------------(1)

R+D=142--------------(2)

Daniel is of same weight in both equations. So the difference in weight should be due to the difference of weight between John and Ramesh. Hence

J - R = 150 -142;

[Thein]

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[peapot]

Hi Thein, thanks for your explanation. The box model abit too complicated for my girl. I will use the equation method that you show at first. Thanks.