Q&A - PSLE Math

[2632parent]

Pls help!!!


On Sunday, Mrs Tan gave Devi and Susan some sweets. On Monday, Devi gave Susan 40% of her sweet. On Tuesday after Susan gave 2/5 of her sweets to Devi, both of them have the same number of sweets. If Susan had 112 sweets more than Devi at first,how many sweets did Devi have on Sunday?

[MathIzzzFun]

2632parent:

Pls help!!!


On Sunday, Mrs Tan gave Devi and Susan some sweets. On Monday, Devi gave Susan 40% of her sweet. On Tuesday after Susan gave 2/5 of her sweets to Devi, both of them have the same number of sweets. If Susan had 112 sweets more than Devi at first,how many sweets did Devi have on Sunday?

Hi

in the end,
Susan --> 9 units --> 3/5 of Susan's sweets
Devi --> 9 units
Before Susan gave 2/5 to Devi,
Susan --> 15 units
Devi --> 3 units --> 3/5 of Devi sweets
At first,
Susan --> 13 units
Devi --> 5 units
So, 8 units ---> 112, 1 unit --> 14
Devi's sweets on Sunday --> 5 x 14 = 70

cheers.

[Michaelia0816]

Ok I also ok! Wrong only thank!! Teaching me too!

[tianzhu]

Michaelia0816:

Would it be better to draw model for understanding!

Hi

Good Morning.

Are you a PSLE 2012 student?

If you're talking about the \"Cindy and Mary Q\", here's the MD.

Hope this helps.

Best wishes.

http://farm8.staticflickr.com/7063/6909440818_71f17bbdb8_z.jpg\">

[2632parent]

MatnIzzzFun thank u for the fast reply still trying to digest the solution

[Michaelia0816]

Of course, using elder account. free to use.

[Michaelia0816]

Question needed help again!

Germaine wants to line the base of her cupcake tin with baking paper. Her cupcake tin have a round base of radius 3.5cm. She has a rectangle piece of baking paper which is 14cm by 20cm. How many cupcakes tin bases can she cuts out with the minimum wastage?(take pi as 22/7)
I just only needs the final answer.

[Michaelia0816]

Oh sorry I found the answer, it was 5. You may choose not to solve it.

[Michaelia0816]

MD please

[Ngserene617]

Michaelia0816:

MD please

Pls help me on this question:

1. There were 40 children at a party. The number of sweets each girl received was 11/2 times as many as that of each boy.
a) if the girls received 40 more sweets than the boys in total, how many more girls than boys were there at the party?
b) what was the total number of sweets given to all the children at the party?

Best regards