Q&A - PSLE Math

[Dharma]

faith2u:

A group of tourists visited an art exhibition. The admission tickets were $3 for adult and $2 for a child. If the ratio of the number of tourists to the number of dollar collected for admission was 8:21, what fraction of the tourists were children?

http://www.postimage.org/

[Tang]

faith2u:

A group of tourists visited an art exhibition. The admission tickets were $3 for adult and $2 for a child. If the ratio of the number of tourists to the number of dollar collected for admission was 8:21, what fraction of the tourists were children?

Model
-------
Number
---------
1 Adult unit ] 8 parts
1 Child unit ]

-------------------
Amount
---------
3 Adult units ] 21 parts
2 Child units ]

1 Adult unit --> 21 - 2 x 8 = 5 parts

So 1 Child unit --> 8 - 5 = 3 parts

Child / Total = 3/(3+5) = 3/8

[faith2u]

Hi Dharma & Tang,


Thanks for both your respond. I am still trying to figure out the solutions using models method.

[dido]

[Moderator's note: Topics merged.]


Mr Tan had some apples and oranges in his shop. 30% of the fruits were oranges. He sold 70 apples and bought another 170 oranges. Then 65% of the fruits were oranges. How many did he have at first?

Who can help? Thanks!

[jedamum]

which level of math is it?

can post in the existing thread accordingly??
if you had missed it, please furnish the info on the level so that mods can do the merging.

[kaitlynangelica]

dido:

Mr Tan had some apples and oranges in his shop. 30% of the fruits were oranges. He sold 70 apples and bought another 170 oranges. Then 65% of the fruits were oranges. How many did he have at first?


Who can help? Thanks!

is the answer 105?

let x be the number of oranges.

170 + x =65%.

x = 65-170 = 105?

[small]

dido:

Mr Tan had some apples and oranges in his shop. 30% of the fruits were oranges. He sold 70 apples and bought another 170 oranges. Then 65% of the fruits were oranges. How many did he have at first?


Who can help? Thanks!

dido, I think Mr Tan had 300 apples and oranges at first.
Is this p5 or P6 question?

[small]

Managed to find the link for you, please find Dharma's working. .


http://www.kiasuparents.com/kiasu/forum/viewtopic.php?t=280&postdays=0&postorder=asc&start=525

[dido]

Hi,


This is P6 question. Sorry, don’t know which section to post.

I have no answer for this.

Cheers

[Dharma]

dido:

[Moderator's note: Topics merged.]


Mr Tan had some apples and oranges in his shop. 30% of the fruits were oranges. He sold 70 apples and bought another 170 oranges. Then 65% of the fruits were oranges. How many did he have at first?

Who can help? Thanks!

http://www.postimage.org/