Q&A - P3 Math

[peggy]

yeonee:

Hi, I have one question:-


John had 4 times as much money as Jessie. After John received$240 and Jessie received $180, John now has twice as much money as Jessie. How much did they have altogether at first?

Hi,

Can someone help the above qtn using model ??

many thanks.....

[Tang]

peggy:

yeonee:

Hi, I have one question:-


John had 4 times as much money as Jessie. After John received$240 and Jessie received $180, John now has twice as much money as Jessie. How much did they have altogether at first?

Hi,

Can someone help the above qtn using model ??

many thanks.....

Hi,

Jo [][][][]
Je []


Jo [][][][][-$240-] = [][$180][][$180]
Je [][$180]

2 u + 240 --> 180 x 2
2 u --> 120
1u --> 120/2 = 60

5 u --> 5 x 60 = $300

They had altogether $300 at first.

[peggy]

Hi,


Got it! Many thanks…

[tianzhu]

Hi


I’ve a request via PM for a MD solution to this question.

Here’s my solution, hope this helps.

I’ve specially selected a golden background; hope 2011 will bring golden luck to all members of KSP.

Have a golden start to a happy, prosperous and healthy new year.

Best wishes

PS --- I've included more steps to show the flow of events.You may consolidate some of the steps as you become more familiar with MD.

http://farm6.static.flickr.com/5128/5310638207_4e1aa476da_b.jpg\">

[chokos]

Harry Had 289 more stamps than Dominic.

When Dominic gave away 161 of his stamps, he had half of what Harry had.
How many stamps did Dominic have at the beginning?

Pls help solving it using model.
Thanks!

[peterch]

I try to answer as follow

http://postimage.org/image/1anz63imc/

[plum-cake]

statement 1. Harry= domi+289

statement 2. Harry/2= domi-169

statement 1- statement 2 ie

(Harry - Harry/2 )= (domi-domi) + (289 - -169)
1/2 Harry = 458
Harry = 916

Statement 1 - 916 = domi + 289
therefore 916 - 289 = domi
627 = domi

I am not sure about the model

[CTong]

Do you have an answer for it? I have tried to work out and the answer is 611.

[plum-cake]

CTong:

Do you have an answer for it? I have tried to work out and the answer is 611.

how do you get that ans/ any working?

ok then I am not smarter than a p4 :!: tho I am a \"\" holder...

[peggy]

I’ve got 611 too!!

Dunno how to post picture here…