Q&A - PSLE Math

[abc_parent]

Thanks to tianzhu & Maths Monster!!

[tianzhu]

abc_parent:

Thanks to tianzhu & Maths Monster!!

Hi

You're welcome.

Best wishes

[kitty2]

Please kindly help with these questions, :thankyou:


1)Minli has 32 English & Chinese books.4/5 of the English books & 3/4 of the chinese books are fiction books.She has a total of 25 fiction books.How many english fiction books are there?

2)Mr Miki had some track shoes in his shop.3/7 of them were Brand x,1/4 of the remainder were brand Y and the rest were brand Z


Types of shoes Amt earn/pair

Brand x $8
Brand Y $6
Brand Z $10

The table shows the amt he earn per pair of shoes.The number of brand X shoes sold to the number of Brand Y shoes sold to the number of brand Z shoes sold was 1:2:4.In total,he sold 1/5 of the shoes and earn $840.How many pairs of Brand Z shoes did he have at first?

3)A car & a lorry were heading from Town A to Town B.When the car overtook the lorry,they were 375km away from town B.The car arrived 1h15 min earlier than the lorry which was still 75km away from town B.

a) Find the average speed of the lorry
b) Find the average speed of the car


4)Siti had some red & blue marbles.80% of the marbles were red.After she bought another 63 red marbles & 46 blue marbles,75% of the marbles were red.Find the total number of marbles she had at first.

[Brenda10]

kitty2:

Please kindly help with these questions, :thankyou:



4)Siti had some red & blue marbles.80% of the marbles were red.After she bought another 63 red marbles & 46 blue marbles,75% of the marbles were red.Find the total number of marbles she had at first.

At first
80% red, 20% blue = 4:1

After that
75% red, 25% blue= 3:1

Working:
R : B
4 : 1
+63 +46
3 : 1


4u 63
3u 138
________
1u 75


5u at first, 5u x 75 = 375

Answer: She has 375 of marbles at first.

Hope this help.

[tianzhu]

Hi

Hope this helps.

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http://farm5.static.flickr.com/4080/4792847782_f8defc472c_b.jpg\">

Best wishes

[tianzhu]

Hi

Hope this helps.

http://farm5.static.flickr.com/4139/4792214239_fcd33d74f9_b.jpg\">

Best wishes

[tianzhu]

Hi

Hope this helps.
http://farm5.static.flickr.com/4078/4792402097_552dd5c9a7_b.jpg\">

Best wishes

[tianzhu]

Hi

Hope this helps.
http://farm5.static.flickr.com/4082/4794512583_e1b85f8ba9_b.jpg\">

Best wishes

[kitty2]

Thank you very much tianzhu :udawoman:

[tianzhu]

kitty2:

Thank you very much tianzhu

Hi kitty2

You're welcome.

Best wishes