## Q&A - PSLE Math

### Re: Q&A - PSLE Math

Kindly assist with this :

At a fun-raising event, 60% of the people were male and the rest were female. 20% of the female left the event in the afternoon.

In the evening, after 33 male and 35 female left the event, 75% of the people at the event were male.

a) What percentage of the people left the event in the afternoon ?

b) How many people were there at the start of the fun raising event ?

At a fun-raising event, 60% of the people were male and the rest were female. 20% of the female left the event in the afternoon.

In the evening, after 33 male and 35 female left the event, 75% of the people at the event were male.

a) What percentage of the people left the event in the afternoon ?

b) How many people were there at the start of the fun raising event ?

### Re: Q&A - PSLE Math

It has been answered before.peggy wrote:Kindly assist with this :

At a fun-raising event, 60% of the people were male and the rest were female. 20% of the female left the event in the afternoon.

In the evening, after 33 male and 35 female left the event, 75% of the people at the event were male.

a) What percentage of the people left the event in the afternoon ?

b) How many people were there at the start of the fun raising event ?

http://www.kiasuparents.com/kiasu/forum ... 7#p1703327

http://www.kiasuparents.com/kiasu/forum ... 6#p1682926

### Re: Q&A - PSLE Math

Pls help:

Raina saves her allowance by putting a note into her money box each week. Each note was either a $2 note or a $5 note. Her father also puts in a $10 note every 30 days. The total amount she collected after 365 days was $278. How many of the notes were $5 notes?

Raina saves her allowance by putting a note into her money box each week. Each note was either a $2 note or a $5 note. Her father also puts in a $10 note every 30 days. The total amount she collected after 365 days was $278. How many of the notes were $5 notes?

### Re: Q&A - PSLE Math

lynn01sg wrote:Pls help:

Raina saves her allowance by putting a note into her money box each week. Each note was either a $2 note or a $5 note. Her father also puts in a $10 note every 30 days. The total amount she collected after 365 days was $278. How many of the notes were $5 notes?

No of $10 notes -> (365/30) 12

Amount -> $120

$278 - $120 -> $158

Assume all $2notes,

52 * 2 -> 104

158 - 104 -> 54

54/3 -> 18 ($5 notes)

There were 18 $5 notes.

### Re: Q&A - PSLE Math

Thanks nicnac, do you know why the last part that you need to divide by 3 which gives you $18 ($5 notes)?

### Re: Q&A - PSLE Math

Difference: $5 - $2 -> $3lynn01sg wrote:Thanks nicnac, do you know why the last part that you need to divide by 3 which gives you $18 ($5 notes)?

### Re: Q&A - PSLE Math

This method is calllynn01sg wrote:Thanks nicnac, do you know why the last part that you need to divide by 3 which gives you $18 ($5 notes)?

**supposition**or

**make a supposition**or

**assumption**. Google the bolded keyword, there are many article and youtube examples.

Once you study it you'll understand why we use the difference.

### Re: Q&A - PSLE Math

Ps help. Many tks and God Bless:)

Meili had some red, blue and yellow balloons. 58 of her balloons were red and 4/11 of them were blue. She had 16 fewer yellow balloons than blue balloons. How many blue balloons did she have?

Meili had some red, blue and yellow balloons. 58 of her balloons were red and 4/11 of them were blue. She had 16 fewer yellow balloons than blue balloons. How many blue balloons did she have?

### Re: Q&A - PSLE Math

Blue -> 4uSOS mum wrote:Ps help. Many tks and God Bless:)

Meili had some red, blue and yellow balloons. 58 of her balloons were red and 4/11 of them were blue. She had 16 fewer yellow balloons than blue balloons. How many blue balloons did she have?

The balance -> 7u -> red + yellow

7u -> 58 + ( 4u -16)

3u -> 42

U -> 14

Blue -> 4u -> 56