## Q&A - P5 Math

### Re: Q&A - P5 Math

anyway to solve this type of qns beside using guess and check?

qns

Ali has more than 30 marbles but fewer than 40 marbles.

If he puts them into groups of 4, there will be a reminder of 3 marbles.

If he puts them into groups of 6, there will be a reminder of 5 marbles.

How many marbles does Ali have?

qns

Ali has more than 30 marbles but fewer than 40 marbles.

If he puts them into groups of 4, there will be a reminder of 3 marbles.

If he puts them into groups of 6, there will be a reminder of 5 marbles.

How many marbles does Ali have?

- Nebbermind
- KiasuGrandMaster
**Posts:**16632**Joined:**Tue Dec 22,**Total Likes:**168

### Re: Q&A - P5 Math

First, either 32+3 or 36+3tankee wrote:anyway to solve this type of qns beside using guess and check?

qns

Ali has more than 30 marbles but fewer than 40 marbles.

If he puts them into groups of 4, there will be a reminder of 3 marbles.

If he puts them into groups of 6, there will be a reminder of 5 marbles.

How many marbles does Ali have?

Since group into 6 will give you remainder 3 for 36+3, it has to be 32+3

### Re: Q&A - P5 Math

Nebbermind wrote:First, either 32+3 or 36+3tankee wrote:anyway to solve this type of qns beside using guess and check?

qns

Ali has more than 30 marbles but fewer than 40 marbles.

If he puts them into groups of 4, there will be a reminder of 3 marbles.

If he puts them into groups of 6, there will be a reminder of 5 marbles.

How many marbles does Ali have?

Since group into 6 will give you remainder 3 for 36+3, it has to be 32+3

thanks

- speedmaths.com
- BrownBelt
**Posts:**559**Joined:**Mon Oct 12,**Total Likes:**3

### Re: Q&A - P5 Math

Hi,Sruthi wrote: . Please help

This is a "

**Double-Ratio**" question.

You may use the "

**Advanced Model Method**"

or the “

**Boxes and Bags Method**”

to solve

**ALL**(100% of) such P5/P6 maths questions.

(or you may use the more algebraic version: "u" and "p")

An example of the "

**Advanced Model Method**" can be found on Page 1104 below.

http://www.kiasuparents.com/kiasu/forum ... tart=11030

=

**One possible solution**:

Let Noel put his $360 into

**1 Bag**and

**3 Boxes**.

Let Kim put her $240 into

**3 Bags**and

**1 Box**.

Noel spent his 1 Bag of money, and Kim spent her 3 Bags of money.

(They spent 4 Bags of money altogether).

Noel had 3 Boxes of money left, and Kim had 1 Box of money left.

1 Bag + 3 Boxes → $360 ……….. (Row 1)

3 Bags and 1 Box → $240

(x 3)

9 Bags and 3 Boxes → $720……… (Row 2)

(Row 2) – (Row 1)

8 Bags and 0 Box → $720 - $360

8 Bags → $360

4 Bags → $180

(They spent 4 Bags of money altogether).

They spent

**$180**altogether.

Hope this helps.

Cheers

**speedmaths**

.

### Re: Q&A - P5 Math

Please help.. anyone? thanks in advance..

**Zachary's monthly salary is 4/5 of Jeremy's salary.Zachary's saving is 4/15 of Jeremy's saving.Jeremy's monthly salary is 1 3/4 Zachary's monthly salary. Find the ratio of Jeremy's expenditure to Zachary's expenditure**
Last edited by belnanna on Sat May 17, 2014 4:11 pm, edited 2 times in total.

- guchengyouzi
- GreenBelt
**Posts:**151**Joined:**Sun Apr 27,

### Re: Q&A - P5 Math

is it got typo error?belnanna wrote:Please help..

Zachary's monthly salary is 4/5 of Jeremy's salary.Zachary's saving is 4/15 of Jeremy's saving.Jeremy's monthly salary is 1 3/4 Zachary's monthly salary. Find the ratio of Jeremy's expenditure to Jeremy's expenditure

### Re: Q&A - P5 Math

edited, thanks !guchengyouzi wrote:is it got typo error?belnanna wrote:Please help..

Zachary's monthly salary is 4/5 of Jeremy's salary.Zachary's saving is 4/15 of Jeremy's saving.Jeremy's monthly salary is 1 3/4 Zachary's monthly salary. Find the ratio of Jeremy's expenditure to Jeremy's expenditure

- guchengyouzi
- GreenBelt
**Posts:**151**Joined:**Sun Apr 27,

### Re: Q&A - P5 Math

These two sentences look strange.belnanna wrote:Please help.. anyone? thanks in advance..

Zachary's monthly salary is 4/5 of Jeremy's salary.Zachary's saving is 4/15 of Jeremy's saving.Jeremy's monthly salary is 1 3/4 Zachary's monthly salary. Find the ratio of Jeremy's expenditure to Zachary's expenditure

### Re: Q&A - P5 Math

I found this question.. Can anyone help please? Thanks..milo-cupcake wrote:

Thanks in advance!

### Re: Q&A - P5 Math

Can someone help please.. thanks

Alan had some apples. When he packed them into bags of 7 apples,he would have 3 apples left. When he packed them into bags of 9 apples,he would be short of 6 apples. what was the least number of apples that Alan had?

Alan had some apples. When he packed them into bags of 7 apples,he would have 3 apples left. When he packed them into bags of 9 apples,he would be short of 6 apples. what was the least number of apples that Alan had?