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Gap & Difference with Internal Transfer

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TOPIC: Gap & Difference with Internal Transfer

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#4025

Gap & Difference with Internal Transfer 1 Year, 6 Months ago	Karma: 0
If boy x give boy y 10 sweets, boy x will have 4 times as many sweet more than boy y.If boy x give boy y 20 sweets,boy x will have 3 times as much sweet as boy y.Find the total number of sweets they have altogether.

yhlee

Last Edit: 2010/07/29 23:33 By Chris.

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#4027

Re:Gap & Difference & Internal Transfer 1 Year, 6 Months ago

Karma: 138

If boy x give boy y 10 sweets, boy x will have 4 times as many sweet more than boy y.If boy x give boy y 20 sweets,boy x will have 3 times as much sweet as boy y.Find the total number of sweets they have altogether

For this you can combine Internal Transfer with Gap and Difference

X gives Y 10 sweets
X : Y
4 : 1

X gives Y 20 sweets
X : Y
3 : 1

In both cases X gives to Y and therefore, we have an Internal Transfer situation. So let's write this as

At first
X : Y
4 : 1 (Total 5units)
16 : 4 (Total 20units)

At End
3 : 1 (Total 4units)
15 : 5 (Total 20units)

Change in X is 1unit
1unit --> change between scenarios --> 10sweets
They have 20units --> 200 sweets

Chris Rogers

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#4039

Re:Gap & Difference & Internal Transfer 1 Year, 6 Months ago	Karma: 0
Thanks i fully understand it.it is actually very simple

yhlee

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