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Sunday, April 30 2017 @ 12:02 AM CDT
 Forum Index >  Test Paper Related >  Primary 4 Matters
 MGS P4 SA2 Maths
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By: veronica2566 (offline)  Friday, September 24 2010 @ 04:07 AM CDT (Read 1895 times)  
veronica2566

Hi all

For the life of me, I am always having problems with these kind of problem sums. Hope one of you can help :

Anne had $165 and Cally had $200 at first.
After spending an equal amount of money, Cally had twice as much money as Anne.
How much money did each of them spend?

Ans : $135

Thanks a lot!
SAH Mom

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By: angietoh (offline)  Friday, September 24 2010 @ 09:47 AM CDT  
angietoh

The answer is not $130?

200 - 165 = 35

35 x 2 = 70

Cally has $70 in the end.

200 - 70 = 130
They each spent $130.

Concept -- Constant Difference

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By: veronica2566 (offline)  Friday, September 24 2010 @ 10:37 PM CDT  
veronica2566

Thanks, Angie! So simple.... easy steps too!

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By: kellywww (online)  Monday, September 27 2010 @ 01:19 AM CDT  
kellywww

Hi Veronica, don't trust all answers in the answer sheet. Some of them are wrong Confused

Hi Angie, yes the answer is 130.

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By: mummyof2 (offline)  Thursday, October 21 2010 @ 08:37 PM CDT  
mummyof2

Quote by: angietoh

The answer is not $130?

200 - 165 = 35

35 x 2 = 70

Cally has $70 in the end.

200 - 70 = 130
They each spent $130.

Concept -- Constant Difference



Hi Angie, can you explainwhy the difference of 35 is actually half of Cally's final amount? So sorry but need to know the concept so that i can explain to my kid.. my maths is terrible.
thanks

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